Patent Application
20100154144
The present disclosure relates to compositions, methods, and kits for dyeing keratinous fibers, such as compositions, methods, and kits making use of i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt, iii) at least hydrogen peroxide or at least one system which generates hydrogen peroxide, iv) at least one (bi)carbonate and v) at least one basifying agent other than the at least one (bi)carbonate.
So-called “permanent” colorings can be obtained with dyeing compositions comprising oxidation dye precursors, generally known as oxidation bases, such as ortho- or para-phenylenediamines, ortho- or para-aminophenols and heterocyclic compounds. These oxidation bases can be colorless or weakly colored compounds which, in combination with oxidizing products, can give rise, by an oxidative coupling process, to colored compounds. The shades obtained can be varied by combining these oxidation bases with couplers or coloring modifiers, the latter being chosen, e.g., from aromatic meta-diamines, meta-aminophenols, meta-diphenols and certain heterocyclic compounds, such as indole compounds. This oxidation dyeing method can involve applying, to the keratinous fibers, bases or a mixture of bases and of couplers with hydrogen peroxide (H2O2 or aqueous hydrogen peroxide solution) as oxidizing agent, allowing diffusion to occur, and then rinsing the fibers. The colorings which result therefrom can be permanent, powerful and resistant to external agents, e.g., to light, bad weather, washing operations, perspiration and rubbing actions.
However, the commercial hair dyes which comprise them can exhibit disadvantages, such as staining or problems of smell, of comfort or of decomposition of the keratinous fibers. This can be the case, for example, with oxidation dyeing operations.
There exists a need to develop dyeing methods which make it possible to obtain powerful colorings starting from ortho-diphenols, such as by starting from a natural extract rich in ortho-diphenols, while limiting the decoloration of the keratinous fibers. There further exists a need to obtain colorings which are less aggressive to the hair and, at the same time, which can withstand external agents (light, bad weather, shampooing operations) and which can be persistent and homogeneous while remaining powerful and chromatic. The subject matter of the present disclosure, inter alia, can in some embodiments satisfy one or more of these needs.
The present disclosure relates to a method for dyeing keratinous fibers, comprising treating said fibers with:
i) at least one entity chosen from ortho-diphenol and derivatives thereof,
ii) at least one metal salt,
iii) hydrogen peroxide or at least one system which generates hydrogen peroxide,
iv) at least one (bi)carbonate, and
v) at least one basifying agent that is neither a (bi)carbonate nor sodium hydroxide.
The present disclosure also relates to a method for dyeing keratinous fibers, comprising treating said fibers with:
i) at least one entity chosen from ortho-diphenol and derivatives thereof,
ii) at least one metal salt,
iii) hydrogen peroxide or at least one system which generates hydrogen peroxide,
iv) at least one (bi)carbonate, and
v) at least one basifying agent that is not a (bi)carbonate,
wherein the at least one ortho-diphenol derivative, the at least one metal salt, the hydrogen peroxide or the at least one system which generates hydrogen peroxide, the at least one (bi)carbonate, or the at least one basifying agent that is not a (bi)carbonate are applied to said fibers via application of at least two separate compositions, including at least a first composition and a second composition, with the first composition comprising:
and with the second composition comprising:
wherein the at least two compositions collectively comprise the at least one ortho-diphenol derivative, the at least one metal salt, the hydrogen peroxide or the at least one system which generates hydrogen peroxide, the at least one (bi)carbonate, and the at least one basifying agent that is not a (bi)carbonate.
The disclosure also relates to a cosmetic composition for dyeing keratinous fibers comprising:
i) at least one entity chosen from ortho-diphenol and derivatives thereof,
ii) at least one metal salt,
iii) hydrogen peroxide or at least one system which generates hydrogen peroxide,
iv) at least one (bi)carbonate, and
v) at least one basifying agent that is neither a (bi)carbonate nor sodium hydroxide.
The present disclosure also relates to a multicompartment device comprising from 2 to 6 compartments comprising from 2 to 6 compositions which collectively comprise:
i) at least one entity chosen from ortho-diphenol and derivatives thereof,
ii) at least one metal salt,
iii) hydrogen peroxide or at least one system which generates hydrogen peroxide,
iv) at least one (bi)carbonate,
v) at least one basifying agent that is neither a (bi)carbonate nor sodium hydroxide, and
vi) water,
said 2 to 6 compositions being aqueous or pulverulent. In at least one embodiment, the composition according to the disclosure is an aqueous composition.
The methods according to the disclosure can exhibit the benefit of dyeing human keratinous fibers with powerful and chromatic colorings which can be resistant to washing operations, to perspiration, to sebum and to light and which can be in addition long lasting without a detrimental change to said fibers. Furthermore, the colorings obtained using the methods of the disclosure can give homogeneous colors from the root to the tip of a fiber (that is, they can have low dyeing selectivity).
In some embodiments, the disclosure relates to an entity chosen from ortho-diphenol and derivatives thereof or a mixture of compounds comprising at least one aromatic ring, such as a benzene ring, comprising at least two hydroxyl (OH) groups carried by two adjacent carbon atoms of the aromatic ring. The ortho-diphenol derivative or derivatives according to the disclosure can be, for example, non-autoxidizable derivatives comprising an indole unit. In some embodiments, they are 5,6-dihydroxyindole.
The aromatic ring can be a fused aryl ring or a fused heteroaromatic ring, i.e. a ring optionally comprising at least one heteroatom, such as benzene, naphthalene, tetrahydronaphthalene, indane, indene, anthracene, phenanthrene, isoindole, indoline, isoindoline, benzofuran, dihydrobenzofuran, chromane, isochromane, chromene, isochromene, quinoline, tetrahydroquinoline and isoquinoline, said aromatic ring comprising at least two hydroxyl groups carried by two adjacent carbon atoms of the aromatic ring. In some embodiments, the aromatic ring of the ortho-diphenol derivatives according to the disclosure is a benzene ring.
A “fused ring” is understood to mean that at least two saturated or unsaturated and heterocyclic or nonheterocyclic rings exhibit a common bond, i.e., that at least one ring is placed side by side with another ring.
The entity chosen from ortho-diphenol and derivatives thereof according to the disclosure may or may not be salified, i.e., present as a salt. It can also occur in the aglycone form (without bonded sugar) or in the form of a glycosylated compound.
In at least one embodiment, the at least one entity chosen from ortho-diphenol derivatives is chosen from those of formula (I), its oligomers, and salified forms thereof:
in which formula (I) the substituents:
R1 to R4, which can be identical or different, represent:
or, two of the substituents carried by two adjacent carbon atoms R1—R2, R2—R3 or R3—R4 form, together with the carbon atoms carrying them, a saturated or unsaturated, aromatic or nonaromatic, ring optionally comprising at least one heteroatom and optionally fused with at least one saturated or unsaturated ring optionally comprising at least one heteroatom. In some embodiments, R1 to R4 jointly form from one to four rings.
In some embodiments, the disclosure relates to ortho-diphenol derivatives of formula (I), two adjacent substituents R1—R2, R2—R3 or R3—R4 of which cannot form a pyrrolyl radical with the carbon atoms which carry them. In some embodiments, R2 and R3 cannot form a pyrrolyl radical fused to the benzene ring carrying the two hydroxyls.
The saturated or unsaturated and optionally fused rings can also be optionally substituted.
The alkyl radicals can be saturated and linear or branched hydrocarbon radicals, for example, C1-C20 radicals, C1-C10 radicals, or C1-C6 alkyl radicals, such as methyl, ethyl, propyl, butyl, pentyl and hexyl.
The alkenyl radicals are unsaturated and linear or branched C2-C20 hydrocarbon radicals, which in some embodiments comprise at least one double bond, such as ethylene, propylene, butylene, pentylene, 2-methylpropylene and decylene.
The aryl radicals can be mono- or polycyclic (which may or may not be fused) carbon-comprising radicals, which in some embodiments comprise from 6 to 30 carbon atoms and have at least one ring which is aromatic, for example, a phenyl, biphenyl, naphthyl, indenyl, anthracenyl or tetrahydronaphthyl ring.
The alkoxy radicals can be alkyl-oxy radicals with the alkyl as defined above, for example, a C1-C10alkyl, such as methoxy, ethoxy, propoxy or butoxy.
The alkoxyalkyl radicals can be (C1-C20)alkoxy(C1-C20)alkyl radicals, such as methoxymethyl, ethoxymethyl, methoxyethyl, ethoxyethyl, and the like.
The cycloalkyl radicals can be C4-C8 cycloalkyl radicals, for example, cyclopentyl and cyclohexyl radicals. The cycloalkyl radicals can be substituted cycloalkyl radicals, such as cycloalkyl radicals substituted by alkyl, alkoxy, carboxylic acid, hydroxyl, amine and/or ketone groups.
The alkyl or alkenyl radicals, when they are optionally substituted, can be substituted by at least one substituent carried by at least one carbon atom chosen from:
a halogen atom;
a hydroxyl group;
a C1-C2 alkoxy radical;
a C1-C10 alkoxycarbonyl radical;
a (poly)hydroxy(C2-C4)alkoxy radical;
an amino radical;
a 5- or 6-membered heterocycloalkyl radical;
an optionally cationic 5- or 6-membered heteroaryl radical, such as an imidazolium radical, which is optionally substituted by a (C1-C4)alkyl radical, for example, a methyl radical;
a carboxyl radical in the acid form or salified form (e.g., salified with an alkali metal or a substituted or unsubstituted ammonium);
a cyano group;
a nitro group;
a carboxyl or glycosylcarbonyl group;
a phenylcarbonyloxy group optionally substituted by at least one hydroxyl group;
a glycosyloxy group; and
a phenyl group optionally substituted by at least one hydroxyl group.
The aryl or heterocyclic radicals or the aryl or heterocyclic part of the radicals, when they are optionally substituted, can be substituted by at least one substituent carried by at least one carbon atom chosen from:
a C1-C10, such as a C1-C8, alkyl radical optionally substituted by at least one radical chosen from the following radicals: hydroxyl, C1-C2 alkoxy, (poly)hydroxy(C2-C4)alkoxy, acylamino or amino substituted by two identical or different C1-C4 alkyl radicals, which two radicals optionally carry at least one hydroxyl group or are able to form, with the nitrogen atom to which they are attached, a saturated or unsaturated and optionally substituted 5- to 7-membered, e.g., 5- or 6-membered, heterocycles optionally comprising another heteroatom identical to or different from nitrogen;
a halogen atom;
a hydroxyl group;
a C1-C2 alkoxy radical;
a C1-C10 alkoxycarbonyl radical;
a (poly)hydroxy(C2-C4)alkoxy radical;
an amino radical;
a 5- or 6-membered heterocycloalkyl radical;
an optionally cationic 5- or 6-membered heteroaryl radical, such as an imidazolium radical, which is optionally substituted by a (C1-C4)alkyl radical, for example, a methyl radical;
an amino radical substituted by one or two identical or different C1-C6 alkyl radicals optionally carrying at least:
an acylamino (—NR—COR′) radical in which the R radical is a hydrogen atom or a C1-C4 alkyl radical optionally carrying at least one hydroxyl group and the R′ radical is a C1-C2 alkyl radical; a carbamoyl ((R)2N—CO—) radical in which the R radicals, which can be identical or different, represent a hydrogen atom or a C1-C4 alkyl radical optionally carrying at least one hydroxyl group; an alkylsulfonylamino (R′SO2—NR—) radical in which the R radical represents a hydrogen atom or a C1-C4 alkyl radical optionally carrying at least one hydroxyl group and the R′ radical represents a C1-C4 alkyl radical or a phenyl radical; or an aminosulfonyl ((R)2N—SO2—) radical in which the R radicals, which can be identical or different, represent a hydrogen atom or a C1-C4 alkyl radical optionally carrying at least one hydroxyl group,
a carboxyl radical in the acid form or salified form (e.g., salified with an alkali metal or a substituted or unsubstituted ammonium);
a cyano group;
a nitro group;
a polyhaloalkyl group, such as trifluoromethyl;
a carboxyl or glycosylcarbonyl group;
a phenylcarbonyloxy group optionally substituted by at least one hydroxyl group;
a glycosyloxy group; and
a phenyl group optionally substituted by at least one hydroxyl group.
A “glycosyl radical” is understood to mean a radical resulting from a mono- or polysaccharide.
The radicals comprising at least one silicon atom can in some embodiments be polydimethylsiloxane, polydiphenylsiloxane, polydimethylphenylsiloxane or stearoxy dimethicone radicals.
The heterocyclic radicals can be, for example, radicals comprising, in at least one ring, at least one heteroatom chosen from O, N and S, for example, O or N, which are optionally substituted by a group or groups such as alkyl, alkoxy, carboxylic acid, hydroxyl, amine or ketone groups. These rings can comprise at least one oxo group on the carbon atoms of the heterocycle.
Mention may be made, among the heterocyclic radicals which can be used, of the furyl, pyranyl, pyrrolyl, imidazolyl, pyrazolyl, pyridyl or thienyl groups.
In some embodiments, the heterocyclic groups can be fused groups, such as benzofuranyl, chromanyl, xanthenyl, indolyl, isoindolyl, quinolyl, isoquinolyl, chromanyl, isochromanyl, indolinyl, isoindolinyl, coumarinyl or isocoumarinyl groups, it being possible for these groups to be substituted, e.g., by at least one OH group.
The ortho-diphenols of use in the methods of the disclosure can be natural or synthetic. The natural ortho-diphenols include the compounds which can be present in nature and which can be reproduced by chemical (semi)synthesis.
The salts of the ortho-diphenols of the disclosure can be salts of acids or of bases. The acids can be inorganic or organic acids. In some embodiments, the acid is hydrochloric acid, which results in the chlorides.
The bases can be inorganic or organic bases. In some embodiments, the bases can be alkali metal hydroxides, such as sodium hydroxide, which results in sodium salts.
In some embodiments, the composition comprises, as ingredient i), at least one synthetic ortho-diphenol derivative which does not exist in nature.
In some embodiments, the composition of use in the method for dyeing keratinous fibers comprises, as ingredient i), at least one natural ortho-diphenol derivative.
In some embodiments, the at least one ortho-diphenol derivative used in the methods of the disclosure according to i) is chosen from:
flavanols, such as catechin and epicatechin gallate,
flavonols, such as quercetin,
anthocyanidins, such as cyanidin, delphinidin or petunidin,
anthocyanins or anthocyans, such as myrtillin,
orthohydroxybenzoates, for example gallic acid salts,
flavones, such as luteolin,
hydroxystilbenes, for example 3, 3′,4,5′-tetrahydroxystilbene, optionally oxylated (for example glucosylated),
3,4-dihydroxyphenylalanine and its derivatives,
2,3-dihydroxyphenylalanine and its derivatives,
4,5-dihydroxyphenylalanine and its derivatives,
dihydroxycinnamates, such as caffeic acid and chlorogenic acid,
orthopolyhydroxycoumarins,
orthopolyhydroxyisocoumarins,
orthopolyhydroxycoumarones,
orthopolyhydroxyisocoumarones,
orthopolyhydroxychalcones,
orthopolyhydroxychromones,
quinones,
hydroxyxanthones,
1,2-dihydroxybenzene and its derivatives,
1,2,4-trihydroxybenzene and its derivatives,
1,2,3-trihydroxybenzene and its derivatives,
2,4,5-trihydroxytoluene and its derivatives,
proanthocyanidins, such as proanthocyanidins A1, A2, B1, B2, B3 and C1,
proanthocyanins,
tannic acid, and
ellagic acid.
When a dyeing precursor exhibits D and L forms, either form can be used in the compositions according to the disclosure, as well as the racemate.
In some embodiments, the natural ortho-diphenols result from extracts of animals, bacteria, fungi, algae, plants and/or fruits used in their entirety or partially. Regarding plants, the extracts can result from fruits, including citrus fruits, vegetables, trees or bushes. Use may also be made of mixtures of these extracts, rich in ortho-diphenols, as defined above.
In some embodiments, the natural ortho-diphenol or ortho-diphenols of the disclosure result from extracts of plants or of plant parts.
Within the meaning of the disclosure, such an extract will be considered a compound i) if it is known to comprise an entity chosen from ortho-diphenol and derivatives thereof.
The extracts can be obtained by extraction of various parts of plants, such as, for example, the root, wood, bark, leaf, flower, fruit, pip, husk or peel.
Mention may be made, among extracts of plants, of extracts of tea leaves or of rose.
Mention may be made, among extracts of fruits, of extracts of apple or of grape (including grape seeds) or extracts of cocoa beans and/or pods.
Mention may be made, among extracts of vegetables, of extracts of potato or of onion skins.
Mention may be made, among extracts of tree wood, of extracts of pine bark or extracts of logwood.
Use may also be made of mixtures of plant extracts.
In some embodiments, the ortho-diphenol derivative or derivatives can be natural extracts rich in ortho-diphenols. In some embodiments, the ortho-diphenol derivative or derivatives are solely natural extracts.
The natural extracts according to the disclosure can be provided in the form of powders or of liquids. In some embodiments, the extracts of the disclosure are provided in the form of powders.
In some embodiments, the synthetic or natural ortho-diphenol or ortho-diphenol derivative(s) and/or the natural extract(s) used as ingredient i) in at least one composition of use in the methods according to the disclosure can range from 0.001% to 20% by weight of the total weight of the composition or compositions comprising the ortho-diphenol or ortho-diphenols or the extract or extracts.
As regards the pure ortho-diphenols, the content in the composition or compositions comprising them can range, for example, from 0.001% to 5% by weight of each of these compositions.
As regards the extracts, the content in the composition or compositions comprising extracts as is can range, for example, from 0.5% to 20% by weight of each of these compositions.
The methods of the disclosure use a composition comprising at least one ingredient ii) which is a metal salt.
In some embodiments, the metal salt is a salt of a divalent metal. In some embodiments, the metal salt is a salt of a transition metal. In some embodiments, the metal salt is not a salt of an alkali metal.
In some embodiments, the at least one metal salt is chosen from manganese (Mn) and zinc (Zn) salts.
Within the meaning of the present disclosure, “salt” is understood to include the oxides and hydroxides of these metals and the salts proper that can result from the action of an acid on a metal. In some embodiments, the at least one salt is not an oxide. In some embodiments, the at least one salt is not a hydroxide. Mention may be made, among the salts, of halides, such as chlorides, fluorides and iodides, sulfates, phosphates, nitrates, perchlorates and salts of carboxylic acids and polymeric complexes which can support said salts, and also their mixtures.
In some embodiments, the manganese salt is other than manganese carbonate, manganese hydrogencarbonate or manganese dihydrogencarbonate.
The salts of carboxylic acids which can be used in the disclosure also include salts of hydroxylated carboxylic acids, such as gluconate.
Mention may be made, as examples of polymeric salts, of manganese pyrrolidonecarboxylate.
Mention may be made, as examples, of manganese chloride, manganese fluoride, manganese acetate tetrahydrate, manganese lactate trihydrate, manganese phosphate, manganese iodide, manganese nitrate trihydrate, manganese bromide, manganese perchlorate tetrahydrate, manganese sulfate monohydrate and manganese gluconate. In some embodiments, the at least one salt is chosen from manganese gluconate and manganese chloride. In some embodiments, the at least one salt comprises manganese gluconate and manganese chloride.
Mention may be made, among zinc salts, of zinc sulfate, zinc gluconate, zinc chloride, zinc lactate, zinc acetate, zinc glycinate and zinc aspartate.
The manganese and zinc salts can be introduced in the solid form into the compositions or else can originate from a natural, mineral or thermal, water rich in these ions or also from sea water (for example, Dead Sea water). They can also originate from inorganic compounds, such as earths or ocres, such as clays (for example green clay), or from plant extracts comprising them.
In some embodiments, the metal salt or salts used can be present in an amount ranging from 0.001% to 0.1% by weight of the total weight of the composition(s) comprising this or these metal salts, for example, from 0.05% to 10% by weight.
In some embodiments, the at least one metal salt of the disclosure has an oxidation state of 2, such as Mn(II) and Zn(II).
iii) Hydrogen Peroxide or a System which Generates Hydrogen Peroxide
In the context of the present disclosure, the third constituent is hydrogen peroxide or at least one system which generates hydrogen peroxide, such as:
a) urea hydrogen peroxide;
b) at least one polymeric complex which releases hydrogen peroxide, such as polyvinylpyrrolidone/H2O2, or other polymeric complexes such as those described in U.S. Pat. Nos. 5,008,093, 3,376,110, and 5,183,901 (in some embodiments, the at least one polymeric complex which releases hydrogen peroxide can be provided in the form of a powder);
c) at least one oxidase which produces hydrogen peroxide in the presence of an appropriate substrate (for example, glucose in the case of glucose oxidase, or uric acid with uricase);
d) at least one metal peroxide which, in water, generates hydrogen peroxide, such as calcium peroxide or magnesium peroxide;
e) at least one perborate; or
f) at least one percarbonate.
In some embodiments, the composition or compositions comprise at least one system which generates hydrogen peroxide, chosen from a) urea hydrogen peroxide; b) at least one polymeric complex which releases hydrogen peroxide, such as polyvinylpyrrolidone/H2O2; c) at least one oxidase; d) at least one perborate; and e) at least one percarbonate.
In some embodiments, the third constituent is hydrogen peroxide.
Furthermore, the composition or compositions comprising the hydrogen peroxide or the at least one system which generates hydrogen peroxide can also include at least one of various adjuvants used conventionally in compositions for dyeing the hair, which include those described below in part vii).
In some embodiments, the hydrogen peroxide or the at least one system which generates hydrogen peroxide can be present in an amount ranging from 0.001% to 12% by weight of hydrogen peroxide, with respect to the total weight of the composition or compositions comprising it or them, for example, from 0.2% to 2.7% by weight.
In some embodiments, the at least one system which generates hydrogen peroxide does not comprise material that is effervescent as a solid. Materials that are effervescent as a solid include powders and pebbles that can produce bubbling, foaming or liberation of a gas, which can occur, for example, upon contact with a solvent or solution, such as a protic solvent, a solution at acidic pH, or a solution or solvent comprising a free Lewis acid.
In the context of the present disclosure, the fourth ingredient can be chosen from carbonates and bicarbonates.
Carbonates and bicarbonates (collectively, (bi)carbonates) include:
a) carbonates of alkali metals (Met+2CO32−), of alkaline earth metals (Met′2+CO32−), of ammonium ((R″4N+)2CO32−) or of phosphonium ((R″4P+)2CO32−), with Met′ representing an alkaline earth metal and Met representing an alkali metal and R″, which can be identical or different, representing a hydrogen atom or an optionally substituted (C1-C6)alkyl group, such as a hydroxyethyl group,
and
b) bicarbonates, also known as hydrogencarbonates, with the following formulae:
In some embodiments, the fourth ingredient is chosen from alkali metal or alkaline earth metal (bi)carbonates, such as alkali metal (bi)carbonates.
Mention may be made of sodium, potassium, magnesium or calcium carbonates or hydrogencarbonates and their mixtures, such as sodium hydrogencarbonate. These hydrogencarbonates can originate from a natural water, for example spring water from the Vichy basin or from La Roche-Posay or Badoit water (cf., for example, the patent document FR 2 814 943). In some embodiments, the at least one (bi)carbonate is chosen from sodium carbonate [497-19-8]=Na2CO3, sodium hydrogencarbonate or sodium bicarbonate [144-55-8]=NaHCO3, and calcium bicarbonate (also known as calcium dihydrogencarbonate)=Ca(HCO3)2.
According to the disclosure, the (bi)carbonate agent or agents used can be present in an amount ranging from 0.001% to 10% by weight of the total weight of the composition or compositions comprising the (bi)carbonate agent or agents, for example, from 0.005% to 5% by weight.
v) Basifying Agent(s) Other than (Bi)Carbonate(s); Additional Basifying Agent(s)
The at least one basifying agent used in the coloring method according to the disclosure as fifth ingredient is not a (bi)carbonate. It is an agent which makes it possible to increase the pH of the composition or compositions in which it occurs. The basifying agent can be a Bronsted, Lowry or Lewis base. It can be inorganic or organic.
In some embodiments, said agent is chosen from a) aqueous ammonia, b) alkanolamines, such as mono-, di- and triethanolamines, and their derivatives, c) oxyethylenated and/or oxypropylenated ethylenediamines, d) inorganic or organic hydroxides, e) alkali metal silicates, such as sodium metasilicates, f) amino acids with basic side chains, for example, amino acids with side chains comprising amino, ureido, guanidino, imino, amino, or other proton accepting groups, such as arginine, lysine, ornithine, citrulline and histidine, and g) the compounds of following formula (II):
in which W is a propylene residue optionally substituted by a hydroxyl group or a C1-C4 alkyl radical, and Ra, Rb, Rc and Rd, which can be identical or different, represent a hydrogen atom, a C1-C4 alkyl radical or a C1-C4 hydroxyalkyl radical.
The inorganic or organic hydroxides can in some embodiments be chosen from a) the hydroxides of an alkali metal, b) the hydroxides of an alkaline earth metal, such as sodium hydroxide or potassium hydroxide, c) the hydroxides of a transition metal, such as hydroxides of metals from groups III, IV, V and VI, or d) the hydroxides of lanthanides or actinides, quaternary ammonium hydroxides and guanidinium hydroxide.
The hydroxide can be formed in situ, such as, for example, guanidine hydroxide by reaction of calcium hydroxide and guanidine carbonate.
In some embodiments, the at least one basifying agent is not sodium hydroxide. In some embodiments, the at least one basifying agent is not a hydroxide of an alkali metal. In some embodiments, the at least one basifying agent does not comprise an alkali metal.
In some embodiments, the at least one basifying agent has a pKa value for association with a proton in water at 25° C. greater than 7, 8, 9, 10, 11, or 12, or ranging from 7 to 14, 8 to 14, 8 to 13, 8 to 12, or 9 to 12.
The at least one basifying agent v) as defined above in some embodiments is present in an amount ranging from 0.001% to 10% by weight of the weight of the composition or compositions comprising it, for example, an amount ranging from 0.005% to 8% by weight of the composition.
In some embodiments, water is used in the method of the disclosure. It can be provided by wetting of the keratinous fibers and/or as part of the composition or compositions comprising the compounds i) to v) as defined above, and/or from at least one other composition.
In some embodiments, the water originates at least from a composition comprising at least one compound chosen from i) to v) as defined above.
In some embodiments, at least one of the at least one ortho-diphenol derivative, the at least one metal salt, the hydrogen peroxide or at least one system which generates hydrogen peroxide, the at least one (bi)carbonate, or the at least one basifying agent that is not a (bi)carbonate is applied to keratinous fibers in a composition comprising water in an amount greater than or equal to 50%, 60%, 70%, 80%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, or 98% by weight of the total weight of the composition.
In some embodiments, at least one of the at least one ortho-diphenol derivative, the at least one metal salt, the hydrogen peroxide or at least one system which generates hydrogen peroxide, the at least one (bi)carbonate, or the at least one basifying agent that is not a (bi)carbonate is applied to keratinous fibers in a composition comprising water in an amount ranging from 50% to 98%; from 60% to 97%; from 70% to 96%; from 80% to 95%; from 90% to 95%; from 60% to 97%; from 70% to 96%; from 80% to 95%; or from 90% to 95%.
In some embodiments, the cosmetic compositions according to the disclosure comprise at least one ortho-diphenol derivative; at least one metal salt; hydrogen peroxide or at least one system which generates hydrogen peroxide; at least one (bi)carbonate, at least one basifying agent that is not a (bi)carbonate, and water, wherein the water is present in an amount greater than or equal to 50%, 60%, 70%, 80%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, or 98% by weight of the total weight of the cosmetic composition.
In some embodiments, the cosmetic compositions according to the disclosure comprise at least one ortho-diphenol derivative; at least one metal salt; hydrogen peroxide or at least one system which generates hydrogen peroxide; at least one (bi)carbonate, at least one basifying agent that is not a (bi)carbonate, and water, wherein the water is present in an amount ranging from 50% to 98%; from 60% to 97%; from 70% to 96%; from 80% to 95%; from 90% to 95%; from 60% to 97%; from 70% to 96%; from 80% to 95%; or from 90% to 95%.
In some embodiments, the multicompartment devices according to the disclosure comprise from 2 to 6 compartments comprising from 2 to 6 compositions which collectively comprise at least one ortho-diphenol derivative; at least one metal salt; hydrogen peroxide or at least one system which generates hydrogen peroxide; at least one (bi)carbonate; at least one basifying agent that is not a (bi)carbonate; and water, said 2 to 6 compositions being aqueous or pulverulent, with at least one of these compositions being aqueous, wherein water is present in the 2 to 6 compositions in a total amount greater than or equal to 50%, 60%, 70%, 80%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, or 98% by weight of the total weight of the 2 to 6 compositions.
In some embodiments, the multicompartment devices according to the disclosure comprise from 2 to 6 compartments comprising from 2 to 6 compositions which collectively comprise at least one ortho-diphenol derivative; at least one metal salt; hydrogen peroxide or at least one system which generates hydrogen peroxide; at least one (bi)carbonate; at least one basifying agent that is not a (bi)carbonate; and water, said 2 to 6 compositions being aqueous or pulverulent, with at least one of these compositions being aqueous, wherein water is present in the 2 to 6 compositions in a total amount ranging from 50% to 98%; from 60% to 97%; from 70% to 96%; from 80% to 95%; from 90% to 95%; from 60% to 97%; from 70% to 96%; from 80% to 95%; or from 90% to 95%.
In some embodiments, said 2 to 6 compositions can be aqueous or pulverulent, with at least one of these compositions being aqueous, wherein water is present in the 2 to 6 compositions in a total amount greater than or equal to 50% by weight of the total weight of the 2 to 6 compositions.
vii) Cosmetic compositions:
In some embodiments, the cosmetic compositions according to the disclosure comprise a cosmetically acceptable coloring vehicle which comprises water, a mixture of water and of at least one organic solvent, or at least one organic solvent. In other embodiments, at least one of the cosmetic compositions according to the disclosure can be provided as a powder.
The term “organic solvent” is understood to mean an organic substance capable of dissolving or dispersing another substance without modifying it chemically.
In some embodiments, the cosmetic compositions according to the disclosure comprise i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt, iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, iv) at least one (bi)carbonate, and v) at least one basifying agent that is not a (bi)carbonate, wherein the ingredients i) through v) are mutually different, i.e., one entity or chemical species does not serve as two of the ingredients i) through v).
Mention may be made, as organic solvents, for example, of lower C1-C4 alkanols, such as ethanol and isopropanol, polyols and polyol ethers, such as 2-butoxyethanol, propylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monomethyl ether or hexylene glycol, and aromatic alcohols, such as benzyl alcohol or phenoxyethanol.
The organic solvents can be present in proportions, for example, ranging from 1 to 40% by weight, with respect to the total weight of the dyeing composition, or from 5 to 30% by weight.
The composition or compositions of the coloring method in accordance with the disclosure can also include various adjuvants conventionally used in compositions for dyeing the hair, which can be chosen from anionic, cationic, nonionic, amphoteric or zwitterionic surface-active agents or their mixtures, anionic, cationic, nonionic, amphoteric or zwitterionic polymers or their blends, inorganic or organic thickening agents, for example, anionic, cationic, nonionic and amphoteric polymeric associative thickeners, antioxidants, penetration agents, sequestering agents, fragrances, buffers, dispersing agents, conditioning agents, such as, for example, volatile or nonvolatile and modified or unmodified silicones, film-forming agents, ceramides, preservatives and opacifying agents.
In some embodiments, said adjuvants are chosen from at least one surface-active agent, such as at least one anionic or nonionic surfactant, a mixture thereof, and at least one inorganic or organic thickening agent.
The above adjuvant or adjuvants are in some embodiments present in an amount, for each of them, ranging from 0.01 to 40% by weight, with respect to the weight of the composition, for example, from 0.1 to 20% by weight, with respect to the weight of the composition.
Of course, a person skilled in the art will take care to choose the optional additional compound or compounds so that the beneficial properties of the at least one composition of use in the coloring method in accordance with the disclosure are not, or not substantially, detrimentally affected by the envisaged addition or additions.
The method employing the ingredients i) to v) as defined above can in addition employ at least one direct dye. These direct dyes can be, for example, chosen from those conventionally used in direct dyeing, among which may be mentioned any of the aromatic and/or nonaromatic dyes commonly used, such as neutral, acid or cationic nitrobenzene direct dyes, neutral, acid or cationic azo direct dyes, natural direct dyes other than ortho-diphenols, neutral, acid or cationic quinones such as anthraquinones, azine, triarylmethane or indoamine direct dyes, methines, styryls, porphyrins, metalloporphyrins, phthalocyanines, methinecyanines and fluorescent dyes.
Mention may be made, among natural direct dyes, of lawsone, juglone, indigo, isatin, curcumin, spinulosin, apigenidine or orceins. Use may also be made of extracts or decoctions comprising these natural dyes, such as cataplasms or henna-based extracts.
According to the disclosure, the direct dye or dyes used in the composition according to the disclosure which comprises the ingredients i) to v) as defined above or the composition(s) of the coloring method according to the disclosure can in some embodiments be present in an amount ranging from 0.001% to 10% by weight of the total weight of the composition(s), such as from 0.05% to 5% by weight.
The composition according to the disclosure or the composition(s) of the method employing the ingredients i) to v) as defined above can also comprise at least one oxidation base other than the ortho diphenols and/or at least one coupler conventionally used for the dyeing of keratinous fibers.
Mention may be made, among the oxidation bases, of para-phenylenediamines, bisphenylalkylenediamines, para-aminophenols, bis-para-aminophenols, ortho-aminophenols, heterocyclic bases and their addition salts.
Mention may be made, among these couplers, of meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalene couplers, heterocyclic couplers and their addition salts.
The oxidation base(s) present in said composition(s) are employed in the method can in some embodiments be present each in an amount ranging from 0.001 to 10% by weight of the total weight of the composition(s) comprising it or them.
The cosmetic composition(s) of the disclosure can be provided in various formulation forms, such as a powder, a lotion, a foam, a cream or a gel, or in any other form appropriate for carrying out dyeing of keratinous fibers. It can also be packaged as a propellant-free pump-action spray or under pressure in an aerosol container in the presence of a propellant and form a foam.
In some embodiments, the pH of the composition or compositions comprising iv) the (bi)carbonate or (bi)carbonates is greater than 7; in some embodiments, said pH ranges from 8 to 12, e.g., from 8 to 10. In some embodiments, the composition comprising the ingredients iv) and v) is basic, i.e., has a pH of greater than 7, such as a pH ranging from 8 to 12.
If the composition or compositions do not comprise (bi)carbonates, the composition or compositions comprising the hydrogen peroxide or a system which generates hydrogen peroxide can in some embodiments have a pH less than 7, e.g., a pH ranging from 1 to 5.
In some embodiments, the composition or compositions comprising the ortho-diphenol or ortho-diphenols of the disclosure and not comprising (bi)carbonates have a pH of less than 7, e.g., a pH ranging from 3 to 6.5.
In some embodiments, the compositions comprising the metal salt or salts and not comprising (bi)carbonates have a pH of less than 7, e.g., a pH ranging from 3 to 6.5.
The pH of these compositions can be adjusted to the desired value using an acidifying or basifying agent or agents commonly used in the dyeing of keratinous fibers and/or using a conventional buffer system or systems.
Mention may be made, among the acidifying agents of the compositions used in the disclosure, by way of example, of inorganic or organic acids, such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids, such as acetic acid, tartaric acid, citric acid or lactic acid, or sulfonic acids.
viii) Single- or Multistage Coloring Method
The coloring methods of the disclosure can be single- or multi-stage coloring methods. In some embodiments, the coloring method is a two-stage method.
The method for coloring keratinous fibers can be carried out in a single stage by applying, to the keratinous fibers, an aqueous dye composition comprising:
i) at least one entity chosen from ortho-diphenol and derivatives thereof,
ii) at least one metal salt, for example, manganese and zinc salts,
iii) hydrogen peroxide or at least one system which generates hydrogen peroxide,
iv) at least one (bi)carbonate, and
v) at least one basifying agent.
The leave-in time after application is in some embodiments a time ranging from 3 to 120 minutes, such as from 10 to 60 minutes or from 15 to 45 minutes.
Alternatively, the method for coloring keratinous fibers can be carried out in two stages.
In some embodiments of the two-stage method, the first stage consists of applying, to said fibers, a first composition comprising at least one ortho-diphenol derivative, at least one metal salt, and hydrogen peroxide or at least one system which generates hydrogen peroxide and then, in a second stage, a second composition comprising at least one (bi)carbonate and at least one basifying agent other than the at least one (bi)carbonate is applied to said fibers, it being understood that at least one of the first and second compositions is aqueous. In some embodiments, one of the two compositions is aqueous and the other is not.
In other embodiments of the two-stage method, the first stage consists of applying, to said fibers, a first composition comprising at least one ortho-diphenol derivative and at least one metal salt and then, in a second stage, a second composition comprising hydrogen peroxide or at least one system which generates hydrogen peroxide, at least one (bi)carbonate and at least one basifying agent other than the at least one (bi)carbonate is applied to said fibers.
In some embodiments, the method for coloring keratinous fibers is carried out in at least two stages ending by a treatment of the keratin fibers with the at least one (bi)carbonate and can be followed by a post-treatment stage or stages, such as a shampooing stage with the aid of classic shampooing, a rinse stage such as with water, and/or a keratin fibers dry stage by a heat treatment such as defined hereinafter, provided that said process does not comprise an intermediate rinse stage just before the step which applies the at least one (bi)carbonate to the keratin fibers.
In some embodiments, the method for coloring keratinous fibers is carried out in two stages: in the first stage, the at least one ortho-diphenol derivative and the at least one metal salt are together applied on keratin fibers and then in a second stage, the hydrogen peroxide or at least one system which generates hydrogen peroxide, the at least one (bi)carbonate and the at least one basifying agent other than the at least one (bi)carbonate are together applied on keratinous fibers; or in the first stage, the at least one ortho-diphenol derivative, the at least one metal salt, and the hydrogen peroxide or at least one system which generates hydrogen peroxide are together applied on keratinous fibers then in a second stage the at least one (bi)carbonate and the at least one basifying agent other than the at least one (bi)carbonate are together applied on keratinous fibers. These processes can in some embodiments be followed by a post-treatment comprising one or more stages, such as a rinse stage, e.g., with water, and/or a shampooing stage, such as with the aid of classic shampooing, and/or a keratinous fibers dry stage by heat treatment such as defined hereinafter. In some embodiments, the method for coloring keratinous fibers in at least 2 stages is not carried out with an intermediate rinse stage between the first and second stages, i.e., between the treatment of keratinous fibers with the mixture of at least one ortho-diphenol derivative, the at least one metal salt, and the hydrogen peroxide or at least one system which generates hydrogen peroxide and the mixture of the at least one (bi)carbonate, and the at least one basifying agent other than the at least one (bi)carbonate, or between the treatment of keratinous fibers with the mixture of and the mixture of the hydrogen peroxide or at least one system which generates hydrogen peroxide, the at least one (bi)carbonate, and the at least one basifying agent other than the at least one (bi)carbonate.
In some embodiments, the methods according to the disclosure comprise, just before applying the at least one (bi)carbonate to the keratinous fibers:
a) mechanically wiping the keratinous fibers, such as defined hereinafter; and
b) drying the keratinous fibers by heating treatment, such as defined hereinafter.
In some embodiments, the keratinous fibers are unrinsed, i.e., the above mechanical wiping and drying are successively carried out without an intervening rinsing.
In some embodiments, just before the at least one (bi)carbonate is applied to the keratinous fibers, said fibers are mechanically wiped.
The methods according to the disclosure comprise, in some embodiments, between the first and second stages discussed above:
a) mechanically wiping the keratinous fibers, such as defined hereinafter; and
b) drying the keratinous fibers by heating treatment, such as defined hereinafter.
In some embodiments, the keratinous fibers are unrinsed, i.e., the above mechanical wiping and drying are successively carried out without an intervening rinsing.
In some embodiments, the mechanical wiping is performed with an absorbent item as the wiper, e.g., a piece of cloth, such as a towel, for example, a terry towel, a dish towel, a paper towel or other absorbent paper. In some embodiments, keratinous fibers are dried by heating with heat treatment at a temperature ranging from 60 to 220° C., such as from 120 to 200° C.
In some embodiments, the methods for coloring keratinous fibers in at least 2 stages comprise an intermediate fast rinse stage between the first and second stages, i.e., between the treatment of keratinous fibers with the mixture of the at least one entity chosen from ortho-diphenol and derivatives thereof, the at least one metal salt, and the hydrogen peroxide or at least one system which generates hydrogen peroxide, and the mixture of the at least one (bi)carbonate, and the at least one basifying agent that is not a (bi)carbonate or between the treatment of keratinous fibers with the mixture of the at least one entity chosen from ortho-diphenol and derivatives thereof and the at least one metal salt and the mixture of the hydrogen peroxide or at least one system which generates hydrogen peroxide, the at least one (bi)carbonate, and the at least one basifying agent that is not a (bi)carbonate. The period of rinse stage length can range from 1 second to 1 minute, such as from 1 second to 30 seconds, or from 2 seconds to 5 seconds, e.g., about 2 seconds, under tap water or tap shower water with a strong water jet. In some embodiments, said fast rinse stage is followed by mechanical wiping such as defined herein.
In the methods comprising at least two stages, the leave-in time after application for the first stage can in some embodiments range from 3 to 120 minutes, such as from 10 to 60 minutes, or from 15 to 45 minutes. The application time for the second stage can in some embodiments range from 3 to 120 minutes, such as from 3 to 60 minutes, or from 5 to 30 minutes.
Whatever the method of application, the application temperature can range from ambient temperature (ambient temperature ranging from about 15 to about 25° C.) to 80° C., such as from 15 to 45° C. Thus, in some embodiments, after application of the composition or compositions according to the disclosure, the hair can be subjected to a heat treatment by heating at a temperature ranging from 30 to 60° C. In practice, this operation can be carried out using a hair styling hood, a hair dryer, a dispenser of infrared rays, or any other conventional heating device.
Use may be made, both as a device for heating and for smoothing the hair, of a heating iron at a temperature ranging from 60 to 220° C., such as from 120 to 200° C.
In some embodiments, the disclosure relates to a coloring method which is carried out at ambient temperature (15 to 25° C.).
In all the embodiments of the methods described above, it is possible for the compositions mentioned to be ready-for-use compositions such as result from the mixing, at the time of use, of at least two compositions, which can be compositions provided in a dyeing kit or kits.
ix) Stage(S) of Mechanical Wiping and/or of Drying:
The methods for dyeing keratinous fibers according to the disclosure can comprise at least one intermediate stage of mechanical wiping of the fibers and/or of drying.
The mechanical wiping and drying stages are also called “controlled leave-in” stages, which differ from a “rinse-out” stage performed under an intense water jet, and from a “non rinsing” or “leave in” procedure, in which there is immediate progression from the first to the second stage of development.
Mechanical wiping of the fibers is understood to mean the rubbing of an absorbent item over the fibers and the physical withdrawal, via the absorbent item, of the surplus of ingredient(s) which has/have not penetrated into the fibers. The absorbent item can be a piece of cloth, such as a towel, e.g., a terry towel, a dish towel, or paper towel or other absorbent paper.
In some embodiments, the mechanical wiping is performed in a way that leaves the keratinous fibers wet, i.e., the wiping does not cause total drying of the keratinous fibers.
Drying is understood to mean the action of evaporating the organic solvents and/or water occurring in one or more compositions used in the methods of the disclosure, comprising or not comprising one or more ingredients i) to iv) as defined above. Drying can be carried out via a heat source (convection, conduction or radiation) by sending, for example, a hot gas stream, such as air, which promotes the evaporation of the solvent or solvents. Mention may be made, as heat source, of a hair dryer, including hood hair dryers, an iron for smoothing the hair, a dispenser of infrared rays, and any other conventional heating device.
Another subject matter of the disclosure is a dyeing “kit” or multicompartment device. For example, this kit can comprise from 2 to 6 compartments comprising from 2 to 6 compositions in which the ingredients i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt, iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, iv) at least one (bi)carbonate and v) at least one basifying agent that is not a (bi)carbonate or sodium hydroxide are distributed, said compositions being aqueous or pulverulent. In some embodiments, at least one of these compositions is aqueous.
In some embodiments, the kit comprises six compartments, the first five compartments respectively comprising the ingredients, as powders, i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt, iii) at least one system which generates hydrogen peroxide, iv) at least one (bi)carbonate, and v) at least one basifying agent that is neither a (bi)carbonate nor sodium hydroxide, and the sixth compartment containing an aqueous composition, such as water or a buffered aqueous solution. In this case, the compound or compounds iii) are hydrogen peroxide precursors.
In other embodiments, the kit comprises five compartments, one of which comprises an aqueous composition, and the compartments of which comprise i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt, iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, iv) at least one (bi)carbonate, and v) at least one basifying agent that is neither a (bi)carbonate nor sodium hydroxide.
In still other embodiments, the device comprises four compartments: a first compartment comprising i) at least one ortho-diphenol derivative, a second compartment comprising ii) at least one metal salt, a third compartment comprising iii) hydrogen peroxide or at least one system which generates hydrogen peroxide and a fourth compartment comprising iv) at least one (bi)carbonate and v) at least one basifying agent other than the at least one (bi)carbonate. In some embodiments, at least one of these compartments contains an aqueous composition.
At least one embodiment relates to a device comprising three compartments:
(a) a first compartment comprises a composition comprising:
(b) a second compartment comprises a composition comprising:
(c) a third compartment comprises iv) at least one (bi)carbonate and v) at least one basifying agent that is neither a (bi)carbonate nor sodium hydroxide.
In such embodiments, at least one of the three compositions is aqueous, and the at least one ortho-diphenol can be in the form of a powder.
It is also possible, in some embodiments, to have a kit comprising three compartments, the first a) comprising a composition comprising i) the at least one entity chosen from ortho-diphenol and derivatives thereof and ii) at least one metal salt, the second b) comprising a composition comprising iii) hydrogen peroxide or at least one system which generates hydrogen peroxide and the third c) comprising a composition comprising iv) at least one (bi)carbonate and v) the at least one basifying agent that is neither a (bi)carbonate nor sodium hydroxide. It is possible for at least one of the compositions to be aqueous and, in some embodiments, the kit comprises a compartment comprising an aqueous composition comprising hydrogen peroxide.
In other embodiments, the kit comprises two compartments. In some of these embodiments, the kit comprises a first compartment comprising a composition comprising i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt and iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, and a second compartment comprising iv) at least one (bi)carbonate and v) at least one basifying agent that is not a (bi)carbonate.
The embodiments in which the kit comprises two compartments also include embodiments in which the kit comprises, in a first compartment, a composition comprising i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt, iv) at least one (bi)carbonate, and v) at least one basifying agent that is not a (bi)carbonate and, in a second compartment, a composition comprising iii) hydrogen peroxide or at least one system which generates hydrogen peroxide.
In these two alternative forms of the kit comprising two compartments, the first composition present in the first compartment comprising either i), ii) and iii) or i), ii), iv) and v) can be in the form of a powder and, in some embodiments, the second composition is aqueous.
In some embodiments, the device according to the disclosure further comprises an additional composition (c) comprising at least one treating agent. The treating agent can be comprised by an additional compartment in any of the kits described above, or it can be provided as a powder or dissolved mixture with one of the other compositions in the kit.
The compositions of the device according to the disclosure can be packaged in separate compartments, optionally accompanied by appropriate application devices which can be identical or different, such as brushes, e.g., fine brushes, absorbent paper or other methods for mechanical wiping, or sponges.
The device mentioned above can also be equipped with an applicator which facilitates delivery of the desired mixture to the hair, for example such as the devices described in patent FR 2 586 913.
By way of non-limiting illustration, concrete examples of certain embodiments of the present disclosure are given below. The examples that follow serve to illustrate the invention without, however, being limiting in nature.
The following compositions were prepared:
The composition (a2) was applied to dry natural hair comprising 90% of white hairs with a bath ratio of 5 g of formulation per 1 g of hair. The treated hair was subsequently left to develop at ambient temperature for 45 minutes.
The composition (b2) was subsequently applied to hair for a development time of 10 minutes at ambient temperature.
After having rinsed, shampooed and dried, the hair samples were respectively dyed in a natural light golden shade. The coloring was very persistent with regard to washing operations and light.
The following compositions were prepared:
The compositions A1 and A2 were applied to locks of dry natural hair comprising 90% white hairs and to locks of dry permed hair comprising 90% white hairs, with a bath ratio of 5 g of formulation per 1 g of hair. The treated hair was subsequently left to develop at a temperature of 50° C. for 30 minutes.
At the end, the hair impregnated with the first composition is wiped using an absorbent paper towel in order to remove the excess formulation.
The composition B1 was applied to locks treated with composition A1, and compositions B1, B2, and B3 were separately applied to locks treated with composition A2. These applications used a bath ratio of 4 g of the composition per 1 g of lock; the development time was 10 minutes at ambient temperature. After a few minutes, a very intense coloring appeared. The hair was subsequently rinsed with water, washed with a conventional shampoo and dried under a hood.
The coloring of the hair was evaluated visually and read on a Minolta spectrocolorimeter (CM3600d, illuminant D65, angle 10°, SCI values) for the L*, a*, b* colorimetric measurements.
In this L*, a*, b* system, L* represents the intensity of the color, a* indicates the green/red color axis and b* indicates the blue/yellow color axis. The lower the value of L, the darker or more intense the color. The higher the value of a*, the redder the shade; the higher the value of b*, the yellower the shade.
The variation in coloring between the colored locks of natural/permed white hair which was untreated (control) and after treatment were defined by ΔE* according to the following equation:
ΔE*=√{square root over ((L*−L0*)2+(a*−a0*)2+(b*−b0*)2)}{square root over ((L*−L0*)2+(a*−a0*)2+(b*−b0*)2)}{square root over ((L*−L0*)2+(a*−a0*)2+(b*−b0*)2)}
In this equation, L*, a* and b* represent the values measured after dyeing the natural/permed hair comprising 90% of white hairs and L0*, a0* and b0* represent the values measured for the untreated natural/permed hair comprising 90% of white hairs.
The greater the value of ΔE, the greater the difference in color between the control locks and the dyed locks.
The coloring was very resistant to washing operations and light.
It is apparent from the above tables that treatment of the locks of natural or permed white hair with the compositions according to the disclosure made it possible to dye in a more chromatic way than the composition according to the comparison test. Furthermore, the compositions according to the disclosure provided the hair with a much more intense color than the comparative composition (i.e., L* was lower with the compositions according to the disclosure).
| Number | Date | Country | Kind |
|---|---|---|---|
| 0858558 | Dec 2008 | FR | national |
This application claims benefit of U.S. Provisional Application No. 61/141,333, filed Dec. 30, 2008. This application also claims benefit of priority under 35 U.S.C. §119 to French Patent Application No. 0858558, filed Dec. 12, 2008.
| Number | Date | Country | |
|---|---|---|---|
| 61141333 | Dec 2008 | US |
