Patent Application
20220401340
Most individuals buy and use a hair shampoo for its cleansing properties, however, present-day hair shampoos generally are formulated with highly-effective synthetic surfactants that exhibit a high foam and primarily clean, as opposed to conditioning the hair. Therefore, many shampoos neither help detangle wet hair nor impart any residual hair conditioning benefits to dry hair, such as the manageability or styleability of hair sets. Consequently, after shampooing, the hair normally is left in a cosmetically-unsatisfactory state because an anionic surfactant-based hair shampoo composition not only removes all of the dirt and soil from the hair, but also removes essentially all of the sebum that is naturally present on the surface of the hair fibers. While conditioner compositions have been formulated to combat the challenges raised when shampooing, these conditioner compositions do not balance all of the desired characteristic with respect to combing, softness, bulk, and fly away. Therefore, the need exists for a new personal care product that can provide the desired conditioning performance to hair.
Some embodiments of the present invention are directed to a personal care composition comprising: a plurality of films, each of the plurality of films having a non-fibrous body comprising: a quarternary salt; a polymer; and a liquid carrier.
Other embodiments of the present invention include a water-dissolvable film having a non-fibrous body, the non-fibrous body comprising: a quarternary salt; a polymer; and a fragrance.
Other embodiments of the present invention include a method of forming a personal care product comprising: a) mixing together a quarternary salt, a polymer, and a fragrance to form a liquid blend; and b) processing the liquid blend into a non-fibrous body that is a water-dissolvable film.
Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
As used throughout, ranges are used as shorthand for describing each and every value that is within the range. Any value within the range can be selected as the terminus of the range. In addition, all references cited herein are hereby incorporated by referenced in their entireties. In the event of a conflict in a definition in the present disclosure and that of a cited reference, the present disclosure controls.
Unless otherwise specified, all percentages and amounts expressed herein and elsewhere in the specification should be understood to refer to percentages by weight. The amounts given are based on the active weight of the material.
The description of illustrative embodiments according to principles of the present invention is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description of embodiments of the invention disclosed herein, any reference to direction or orientation is merely intended for convenience of description and is not intended in any way to limit the scope of the present invention.
Relative terms such as “lower,” “upper,” “horizontal,” “vertical,” “above,” “below,” “up,” “down,” “top,” and “bottom” as well as derivatives thereof (e.g., “horizontally,” “downwardly,” “upwardly,” etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description only and do not require that the apparatus be constructed or operated in a particular orientation unless explicitly indicated as such.
Unless otherwise specified, all percentages and amounts expressed herein and elsewhere in the specification should be understood to refer to percentages by weight. The amounts given are based on the active weight of the material. According to the present application, the term “about” means +/−5% of the reference value. According to the present application, the term “substantially free” less than about 0.1 wt. % based on the total of the referenced value.
Referring now to
The film 100 may have a width W that ranges from about 1 micron (μm) to about 50 millimeters (mm)—including all widths and sub-ranges there-between. The film 100 may have a length L that ranges from about 5 μm to about 100 mm—including all lengths and sub-ranges there-between.
The first exposed major surface 101 may have a first surface area that ranges from about 5 μm2 to about 500 cm2—including all surface areas and sub-ranges there-between. The second exposed major surface 102 may have a second surface area that ranges from about 10 μm2 to about 250 cm2—including all surface areas and sub-ranges there-between. The first surface area and the second surface area may be equal.
The film 100 of the present invention may be a flexible film. The term “flexible” refers to the ability of a material or structure to be deformed under the application of stress and substantially return to its original state when the applied stress is removed. The film 100 of the present invention also forms a self-supporting structure in that the film 100 may be able to retain its structure without a separate substrate—as compared to a coating which requires a separate substrate.
The film 100 of the present invention may be water-dissolvable. The term “water-dissolvable” refers to the film 100 of the present invention will physically break down when exposed to liquid water such that the self-supporting structure of the film 100 ceases to exist.
The film 100 of the present invention may have a body 120 that is non-fibrous (also referred to as “non-fibrous body” 120). The non-fibrous body 120 may comprise a first major surface 121 opposite a second major surface 122 and a side surface extending there-between. The non-fibrous body 120 is substantially free of fiber (also referred to as fibrous material or filament). In some embodiments, the non-fibrous body 120 is entirely free of fiber (also referred to as fibrous material or filament)—i.e., 0.0 wt. % based on the total weight of the non-fibrous body 120.
The first exposed major surface 101 of the film 100 may be formed by the first major surface 121 of the non-fibrous body 120. The second exposed major surface 102 of the film 100 may be formed by the second major surface 122 of the non-fibrous body 120. The side exposed surface of the film 100 may be formed by the side surface of the non-fibrous body 120. The film 100 may be formed entirely by the non-fibrous body 120.
The non-fibrous body 120 of the present invention may be flexible. The non-fibrous body 120 also forms a self-supporting structure in that the non-fibrous body 120 may be able to retain its structure without a separate substrate. The non-fibrous body 120 may be water-dissolvable.
The non-fibrous body 120 may be formed by a composition comprising a binder and a surfactant. The body 120 may further comprise a plasticizer. The body 120 may be anhydrous.
The binder may be a polymeric binder. The polymeric binder may be present in an amount ranging from about 30 wt. % to about 55 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the polymeric binder may be present in an amount ranging from about 35 wt. % to about 50 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the polymeric binder may be present in an amount ranging from about 40 wt. % to about 45 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between.
The polymeric binder may be a viscoelastic polymer. The polymeric binder may be a water-soluble polymer—such as hydroxyl polymer. Non-limiting examples of water-soluble hydroxyl polymers include polyols, such as polyvinyl alcohol, polyvinyl alcohol derivatives, polyvinyl alcohol copolymers, starch, starch derivatives, starch copolymers, chitosan, chitosan derivatives, chitosan copolymers, cellulose derivatives such as cellulose ether and ester derivatives, cellulose copolymers, hemicellulose, hemicellulose derivatives, hemicellulose copolymers, gums, arabinans, galactans, proteins and various other polysaccharides and mixtures thereof.
In a non-limiting embodiment, the water-soluble hydroxyl polymer is selected from the group consisting of: polyvinyl alcohols, hydroxymethylcelluloses, hydroxyethylcelluloses, hydroxypropylmethylcelluloses and mixtures thereof. In a preferred embodiment, the water-soluble polymer is hydroxypropylmethylcellulose.
The water-soluble polymers may be or include, but is not limited to, cellulose ethers, methacrylates, polyvinylpyrollidone, or the like, and combinations thereof. For example, the water soluble polymer may include one or more cellulose ethers or cellulose polymers, selected from one or more of hydroxyalkyl cellulose polymers, such as hydroxypropyl methylcellulose (HPMC), hydroxyethylpropyl cellulose (HEPC), hydroxybutyl methyl cellulose (HBMC), hydroxypropyl cellulose, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose (CMC), or combinations thereof. In at least one implementation, the hydroxyalkyl cellulose polymer is a low viscosity hydroxylpropyl methyl cellulose polymer (HPMC). For example, the HPMC polymer may have a viscosity of from about 1 millipascal seconds (mPa.s) to about 100 mPa.s, as determined as a 2 wt % aqueous solution of the HPMC at 20° C. using a Ubbelohde tube viscometer. In a typical implementation, the HPMC has a viscosity of about 3 mPa.s to about 20 mPa.s at 20° C. In at least one implementation, the personal care composition or the water hydratable solid thereof may include two or more hydroxyalkyl cellulose polymers having different molecular weights. In at least one implementation, the two or more hydroxyalkyl cellulose polymers may be or include, but is not limited to, METHOCEL™ E5 PREMIUM LV, which is commercially available from The Dow Chemical Company of Midland, Mich., Hypromellose (hydroxypropyl methylcellulose, 50 mPa.s USP Substitution Type 2910), which is commercially available from VWR International Co. of Radnor, Pa., or combinations thereof. METHOCEL™ E5 LV is a USP grade, low viscosity HPMC having 29.1% methoxyl groups and 9% hydroxyproxyl group substitutions. In a 2 wt % solution, the METHOCEL™ has a viscosity of 5.1 mPa.s at 20° C. as measured with a Ubbelohde tube viscometer.
In some embodiments, the surfactant may comprise a cationic surfactant. The cationic surfactant may comprise a quarternary salt. The quarternary salt may be an esterquat. In some embodiments, the cationic surfactant may be a cationic polymer comprising a plurality of quarternary salts groups—herein referred to as a polyquat.
The esterquat may have the following formula:
wherein Q represents a carboxyl group having the structure —OCO—or —COO—; R1 represents an aliphatic hydrocarbon group having from 8 to 22 carbon atoms; R2 represents —Q-R1 or —OH; q, r, s and t, each independently represent a number of from 1 to 3; and X-a is an anion of valence a.
The cationic surfactant may be present in an amount ranging from about 0.5 wt. % to about 6.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the cationic surfactant may be present in an amount ranging from about 1.0 wt. % to about 5.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the cationic surfactant may be present in an amount ranging from about 2.0 wt. % to about 4.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between.
According to the present invention, it has been discovered that by using a cationic surfactant—specifically, an esterquat—the film 100 may impart superior condition properties when added to a personal care product, such as a hair conditioning composition. Specifically, the film 100 may impart satisfactory-to-superior combing (both dry and wet), hair-softness, hair-bulk, and fly away.
The surfactant may further comprise a non-ionic surfactant. The surfactant may further comprise a non-ionic surfactant such that the non-fibrous body 120 comprises both a cationic surfactant and a non-ionic surfactant. The non-ionic surfactant may be a polysorbate compound having the formula:
wherein w, x, and y is respectively an integer of 0-20, preferably 1-20, and z is an integer of 1-20, and wherein w+x+y+z=4-30—including all integers and sub-ranges there-between. In some embodiments, w+x+y+z=4-25—including all integers and sub-ranges there-between. In some embodiments, w+x+y+z=10-25—including all integers and sub-ranges there-between. The group R may be linear or branched, and saturated or unsaturated alkyl having 11-23 carbon atoms, preferably from 12 to 18 carbon atoms. In some embodiments, the polysorbate compound may be polysorbate 80.
The cationic surfactant and the non-ionic surfactant may be present in a weight ratio ranging from about 1.5:1 to about 2.5:1—including all ratios and sub-ranges there-between. In some embodiments, the cationic surfactant and the non-ionic surfactant may be present in a weight ratio ranging of about 2:1.
The non-fibrous body 120 may further comprise a plasticizer. The plasticizer may be selected from one or more of diols, polyols, copolyols, polycarboxylic acids, polyesters and dimethicone copolyols. Non-limiting examples of diol/polyols include glycerin, diglycerin, propylene glycol, ethylene glycol, butylene glycol, pentylene glycol, cyclohexane dimethanol, hexanediol, 2,2,4-trimethylpentane-1,3-diol, polyethylene glycol (200-600), pentaerythritol, sugar alcohols such as sorbitol, mannitol, lactitol and other mono- and polyhydric low molecular weight alcohols (e.g., C2-C8 alcohols); mono di- and oligo-saccharides such as fructose, glucose, sucrose, maltose, lactose, high fructose corn syrup solids, and dextrins, and ascorbic acid.
In some embodiments, the plasticizer includes glycerin and/or propylene glycol and/or glycerol derivatives such as propoxylated glycerol. In another example, the plasticizer is selected from the group consisting of glycerin, ethylene glycol, polyethylene glycol, propylene glycol, glycidol, urea, sorbitol, xylitol, maltitol, sugars, ethylene bisformamide, amino acids, and mixtures thereof.
The plasticizer may be present in an amount ranging from about 1.0 wt. % to about 8.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the plasticizer may be present in an amount ranging from about 2.0 wt. % to about 7.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the plasticizer may be present in an amount ranging from about 3.0 wt. % to about 6.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between.
The non-fibrous body 120 of the present invention may further comprise one or more colorants. The colorants may be a pigment, a dye, or mixtures thereof. For example, metal oxide pigments, those which are surface treated titanium dioxide, optionally, zirconium oxide or cerium oxide, zinc oxide, iron oxide (black, yellow or red), chromium oxide, manganese violet, ultramarine blue, chromium hydrate and ferric blue, carbon black, barium, strontium, calcium or aluminum pigment (e.g. D & C or FD & C), cochineal carmine, oxy titanium or bismuth mica coated with chloride, (those with iron oxide) of titanium mica, titanium mica (particularly those involving ferric blue or chromium oxide), (those with organic pigments) titanium mica, bismuth oxy a pearl pigment those that chloride to the group, Goniokuroma Click (goniochromatic) pigments. Other examples include pigments with a multilayer interference structure, reflective pigments, such as silver coated glass materials, nickel/chromium/glass material coated with molybdenum alloy, a glass substrate coated with brown iron oxide particles having a particle comprising a stack of at least two polymer layers, for example (from 3M) MIRROR GLITTER, and the like.
Examples of the dye include water-soluble dyes such as second copper sulfate, ferrous sulfate, water-soluble sulfopolyesters, natural dyes, for example carotene and beet juice roots, methylene blue, caramel, tartrazine disodium salt and fustin (fuschin) sodium salt, and mixtures thereof. Lipophilic dyes may also optionally be used. Additional non-limiting examples of dyes include food dyes suitable for food, drug and cosmetic applications, and mixtures thereof.
The colorants may be present in an amount ranging from about 0.1 wt. % to about 4.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the colorants may be present in an amount ranging from about 0.5 wt. % to about 3.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the colorants may be present in an amount ranging from about 1.0 wt. % to about 2.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between.
The non-fibrous body 120 may further comprise one or more active agents such as a starch or a starch derivative. The starch may be a natural starch.
Naturally occurring starch is generally a mixture of linear amylose and branched amylopectin polymer of D-glucose units. The amylose is a substantially linear polymer of D-glucose units joined by (1,4)-α-D links. The amylopectin is a highly branched polymer of D-glucose units joined by (1,4)-α-D links and (1,6)-α-D links at the branch points. Naturally occurring starch typically contains relatively high levels of amylopectin, for example, corn starch (64-80% amylopectin), waxy maize (93-100% amylopectin), rice (83-84% amylopectin), potato (about 78% amylopectin), and wheat (73-83% amylopectin). Though all starches are potentially useful herein, the present invention is most commonly practiced with high amylopectin natural starches derived from agricultural sources, which offer the advantages of being abundant in supply, easily replenishable and inexpensive.
As used herein, “starch” includes any naturally occurring unmodified starches, modified starches, synthetic starches and mixtures thereof, as well as mixtures of the amylose or amylopectin fractions; the starch may be modified by physical, chemical, or biological processes, or combinations thereof. The choice of unmodified or modified starch for the present invention may depend on the end product desired. In one embodiment of the present invention, the starch or starch mixture useful in the present invention has an amylopectin content from about 20% to about 100%, more typically from about 40% to about 90%, even more typically from about 60% to about 85% by weight of the starch or mixtures thereof.
Suitable naturally occurring starches can include, but are not limited to, corn starch, potato starch, sweet potato starch, wheat starch, sago palm starch, tapioca starch, rice starch, soybean starch, arrow root starch, amioca starch, bracken starch, lotus starch, waxy maize starch, and high amylose corn starch. In a preferred embodiment, the starch is corn starch.
The starch may be present in an amount ranging from about 5.0 wt. % to about 15.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the starch may be present in an amount ranging from about 7.0 wt. % to about 13.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the starch may be present in an amount ranging from about 9.0 wt. % to about 11.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between.
The non-fibrous body 120 may further comprise one or more fragrances or perfume. The fragrance and/or perfume may be present in an amount ranging from about 25.0 wt. % to about 50.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the fragrance and/or perfume may be present in an amount ranging from about 30.0 wt. % to about 45.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between. In some embodiments, the fragrance and/or perfume may be present in an amount ranging from about 35.0 wt. % to about 40.0 wt. %—based on the total weight of the non-fibrous body 120—including all percentages and sub-ranges there-between.
Non-limiting examples of fragrances and perfumes include odor compounds selected from: 7-acetyl-1,2,3,4,5,6,7,8-octahydro-1,1,6,7-tetramethylnaphthalene, α-ionone, β-ionone, γ-ionone α-isomethylionone, methylcedrylone, methyl dihydrojasmonate, methyl 1,6,10-trimethyl-2,5,9-cyclododecatrien-1-yl ketone, 7-acetyl-1,1,3,4,4,6-hexamethyltetralin, 4-acetyl-6-tert-butyl-1,1-dimethylindane, hydroxyphenylbutanone, benzophenone, methyl β-naphthyl ketone, 6-acetyl-1,1,2,3,3,5-hexamethylindane, 5-acetyl-3-isopropyl-1,1,2,6-tetramethylindane, 1-dodecanal, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde, 7-hydroxy-3,7-dimethyloctanal, 10-undecen-1-al, isohexenylcyclohexylcarboxaldehyde, formyltricyclodecane, condensation products of hydroxycitronellal and methyl anthranilate, condensation products of hydroxycitronellal and indole, condensation products of phenylacetaldehyde and indole, 2-methyl-3-(para-tert-butylphenyl)propionaldehyde, ethylvanillin, heliotropin, hexylcinnamaldehyde, amylcinnamaldehyde, 2-methyl-2-(isopropylphenyl)propionaldehyde, coumarin, γ-decalactone, cyclopentadecanolide, 16-hydroxy-9-hexadecenoic acid lactone, 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-γ-2-benzopyran, β-naphthol methyl ether, ambroxane, dodecahydro-3a,6,6,9a-tetramethylnaphtho[2,1b]furan, cedrol, 5-(2,2,3-trimethylcyclopent-3-enyl)-3-methylpentan-2-ol, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol, caryophyllene alcohol, tricyclodecenyl propionate, tricyclodecenyl acetate, benzyl salicylate, cedryl acetate, and tert-butylcyclohexyl acetate.
Other fragrances may include odor compounds selected from essential oils, resinoids and resins from a large number of sources, such as, for example, Peru balsam, olibanum resinoid, styrax, labdanum resin, nutmeg, cassia oil, benzoin resin, coriander, and lavandin. Further suitable fragrances include odor compounds selected from phenylethyl alcohol, terpineol, linalool, linalyl acetate, geraniol, nerol, 2-(1,1-dimethylethyl)cyclo-hexanol acetate, benzyl acetate, and eugenol.
The fragrances or perfumes can be used as single substances or in a mixture with one another.
In some embodiments, the fragrance may be provided as a microcapsule formulation, whereby the odor-compound is surrounded by a release controlling membrane, which may serve as a protective shell. The material inside the microcapsule is referred to as the core, internal phase, or fill, whereas the wall is sometimes called a shell, coating, or membrane.
The possible shell materials vary widely in their stability toward water. Among the most stable are polyoxymethyleneurea (PMU)-based materials, which may hold certain PRMs for even long periods of time in aqueous solution (or product). Such systems include but are not limited to urea-formaldehyde and/or melamine-formaldehyde.
Stable shell materials include polyacrylate-based materials obtained as reaction product of an oil soluble or dispersible amine with a multifunctional acrylate or methacrylate monomer or oligomer, an oil soluble acid and an initiator, in presence of an anionic emulsifier comprising a water soluble or water dispersible acrylic acid alkyl acid copolymer, an alkali or alkali salt. Gelatin-based microcapsules may be prepared so that they dissolve quickly or slowly in water, depending for example on the degree of cross-linking.
Many other capsule wall materials are available and vary in the degree of perfume diffusion stability observed. Without wishing to be bound by theory, the rate of release of perfume from a capsule, for example, once deposited on a surface is typically in reverse order of in-product perfume diffusion stability. As such, urea-formaldehyde and melamine-formaldehyde microcapsules for example, typically require a release mechanism other than, or in addition to, diffusion for release, such as mechanical force (e.g., friction, pressure, shear stress) that serves to break the capsule and increase the rate of perfume (fragrance) release.
The odor compound may be included as part of a microencapsulated fragrance or perfume or a non-encapsulated fragrance or perfume.
The film 100 of the present invention may be formed by mixing together the binder (e.g., polymeric binder), the surfactant, and the fragrance to form a blend. In some embodiments, the film 100 of the present invention may be formed by mixing together the binder (e.g, polymeric binder), the surfactant, the plasticizer, the starch, and the fragrance to form a blend. The blend may be a liquid. The blend may then be processing into a sheet, which is then cut into multiples of the non-fibrous body 120, whereby each non-fibrous body 120 forms the film 100.
Referring now to
The personal care composition 200 may be a hair-conditioning composition, a hair shampoo composition, and the like. The personal care composition 200 of the present invention may further comprise an additional components suitable for use with a hair-conditioning and/or hair-shampoo composition.
The personal care product 1 of the present invention may include a container 10 comprising a reservoir 11 where the personal care composition 200 may be located. The container 10 may further comprise an opening through which the personal care composition 200 may be dispensed out of from the reservoir 11.
The personal care product 1 may further comprise a cap 5 which may seal the opening of the container to seal the reservoir 11, thereby preventing any personal care product 200 from inadvertently escaping the reservoir 11.
While the invention has been described with respect to specific examples including presently preferred modes of carrying out the invention, those skilled in the art will appreciate that there are numerous variations and permutations of the above described systems and techniques. It is to be understood that other embodiments may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Thus, the spirit and scope of the invention should be construed broadly as set forth in the appended claims.
An experiment was performed to test the conditioning performance of the film of the present invention. Two film formulations were prepared—as set forth below in Table 1.
Each example was then tested for wet combing, dry combing, and softness. Two (2) sets of five (5) hair tresses each are prepared and cleaned with 20% solution of sodium laureth sulfate. Each set of hair tresses is washed with 1 mL of a commercially available shampoo, and 0.1 g of either an exemplary composition of the present invention or a comparative composition, per hair tress. After each treatment, trained in-house expert panelists, blindly evaluate the tresses. Tresses are randomly assigned to avoid bias. Panelist evaluate both wet and dry stages. Wet stage evaluation is more relevant for describing hair conditioning benefit. This relates to ease of combing. The best performer are assigned a score of two points and the low performer assigned a score of one point.
Hair volume and alignment evaluations are carried out with Rumba equipment from Bossa Nova-Tech. Two (2) sets of six (6) hair tresses are prepared and cleaned with twenty percent (20%) solution of sodium laureth sulfate. Each set is then treated with 0.5 mL of a commercially available shampoo and 0.1 g of either an exemplary composition of the present invention or a comparative composition, per hair tress. The Rumba equipment takes pictures of a hair tress suspended using a clamp while illuminating the sample with polarized light in multiple orientations. The pictures are processed with Rumba software to determine hair orientation using a color index. The comparison of colored pixels on each image with the non-reflective background surface is used to measure the volume of the hair tress. The software is also used to measure hair volume and alignment. The results of these experiments are described below in Table 2.
As demonstrated by the data described in Table 2 (above), exemplary films of the present invention provide an unexpected improvement in wet combing, as well as enhancement of softness, volume, and hair alignment without any detrimental impact on dry combing performance.
As those skilled in the art will appreciate, numerous changes and modifications may be made to the embodiments described herein, without departing from the spirit of the invention. It is intended that all such variations fall within the scope of the invention.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2020/055345 | 10/13/2020 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 62926099 | Oct 2019 | US |
