Patent Application
20090274642
Hair care compositions that can be used to prevent oxidative damage to hair, their methods of use, and methods of marketing such compositions.
Many attributes contribute to the appearance of hair considered to be attractive. For instance, undamaged hair is very desirable, whether it be on the scalp, beard, or moustache regions. In contrast, oxidatively damaged hair is not as attractive, and can appear dull, lifeless, and frizzy. Furthermore, oxidatively damaged hair can be more difficult to style and condition, and typically cannot be styled into as many hairstyles, leaving the individual frustrated and with an unkempt appearance. Because of the foregoing problems associated with oxidatively damaged hair, many damaged-haired individuals expend great effort and time on grooming, yet still do not attain their desired hairstyle and appearance. This can lead to frustration and/or lack of confidence in his or her appearance. These problems can be experienced by both female and male consumers.
Accordingly, there is a need to provide consumers with a way to prevent hair from experiencing oxidative damage, thus resulting in a more attractive hair and a more attractive hair style.
The present invention relates to hair care compositions that can be used to prevent oxidative damage to hair, their methods of use, and methods of marketing such compositions.
In one aspect, the composition comprises a follicular fungi reduction agent (“FFRA”). In another aspect, the method comprises topically applying a hair care composition comprising an effective amount of a FFRA to the desired region (e.g., scalp, beard, moustache) of a mammal for the purpose of preventing oxidative damage to hair. In yet another aspect, the method of marketing communicates that the hair care composition comprising an FFRA can be used to prevent oxidative damage to hair.
These and other features, aspects, and advantages of the present invention will become evident to those skilled in the art from a reading of the present disclosure.
While the specification concludes with the claims particularly pointing and distinctly claiming the invention, it is believed that the present invention will be better understood from the following description.
The present invention provides methods for preventing oxidative damage to hair by applying an effective amount of a FFRA to the desired area; this, in turn, surprisingly leads to prevention of oxidative damage of the hair.
Oxidation breaks chemical bonds between chemical entities and changes their properties. As is relates to hair, oxidation breaks the disulfide bonds of cystine, creating cysteic acid (SO3= as one by-product. This process of oxidation occurs with bleaching and coloring of hair, exposure to UV radiation and by normal daily activities. Oxidation compromises the health of the hair by promoting brittleness, loss of the hair's f-layer, and melanin degradation. The surface of the hair becomes less hydrophobic and more susceptible to water penetration. The prevention of oxidation helps maintain the health of the hair.
Hair keratin undergoes oxidation by both photochemical (e.g., exposure to UV light and/or atmospheric oxygen) and chemical means (bleaches, permanent waves and/or permanent dyes). Oxidation results in decreased tensile strength of hair due to disulfide bond scission, in color changes due to melanin degradation, and in more easily abraded cuticle due to loss of the f-layer and hydrophobicity. (Martin-K. 4. Infrared and Raman Studies of Skin and Hair: A review of cosmetic spectroscopy. The Internet Journal of Vibrational Spectroscopy. Volume 3, Edition 2 (1999)—Unilever) Cysteic acid residues arise from disulfide bond fission of cystine, the most abundant amino acid found in hair, followed by oxidation. (Strassburger-J and Breuer-M M. Quantitative Fourier transform infrared spectroscopy of oxidize hair. J. Soc. Cosmet. Chem., 36, 61-74 (January/February 1985))
Furthermore, various studies have demonstrated that that oxidative damage results from chemical and physical stress, and cuticle damage results from oxidation. (Takada-K et. al. Influence of Oxidative and/or Reductive Treatment on Human Hair (I): Analysis of Hair-Damage after Oxidative and/or Reductive Treatment. J. Oleo Sci., Vol 52, No. 10, 541-548 (2003)) In addition, such studies have concluded that use of an anti-oxidant decreases cysteic acid and prevents an increase in hair damage. (Takada-K et. al. Influence of Oxidative and/or Reductive Treatment on Human Hair (II): Effect of Hydrophilic Extracts from Rosmarinus officinalis L. on Oxidative and/or Reductive Hair-Damage. J. Oleo Sci., Vol. 52, No. 10, 549-556 (2003)) Chemical and physical stress, as well as environmental stress in daily life, can damage hair. Furthermore, cysteic acid, which is an oxidation product, increases in the hair depending on the amount of stress in daily life.
The cuticles of the hair are covered on the surface by fatty acid f-layer. When these layers are removed by chemical and physical treatment, the hair surface becomes hydrophilic, leading to an increase in cysteic acid and an increase in the frequency of splitting and breaking in the damaged hair. Because the f-layer is responsible for hair shine, damage to or removal of the f-layer results in a reduction in hair shine.
Furthermore, the presence of fungi (e.g., Malassezia) in the hair follicle leads to the production of oxidative products, and thus leads to oxidative damage of the hair, even before it emerges from the hair follicle. The fungi also produce enzymes that strip the protective lipid from the surface of the hair which results in increased oxidation of the hair from environmental insults. See, e.g., Jun Xu, et al., (2007) Dandruff-associated Malassezia genomes reveal convergent and divergent virulence traits shared with plant and human fungal pathogens. Proceedings of the National Academy of Science, USA, 104 (47) 18731.
Surprisingly, the present inventors have found that applying an effective amount of a follicular fungi reduction agent (“FFRA”) to the desired area can prevent oxidative damage in hair. The FFRA decreases the level of fungi present in the hair follicle and surface, thus leading to less oxidative damage.
Because consumers are not familiar with the use of FFRAs for the purpose of preventing oxidative damage to hair, the present invention also provides methods of marketing that can be advantageously used to help potential consumers appreciate the benefits that they can derive from such a product and/or its method of use. Furthermore, a method of marketing a first composition by comparing it to a second composition that comprises a FFRA is also provided.
All percentages, parts and ratios are based upon the total weight of the hair care compositions of the present invention and all measurements made are at 25° C., unless otherwise specified. All such weights as they pertain to listed ingredients are based on the active level and, therefore, do not include carriers or by-products that may be included in commercially available materials, unless otherwise specified.
As used herein, the term “hair care compositions” are compositions that are applied to the hair and/or the skin underneath the hair, including compositions used to treat or care for the hair. Products contemplated by the phrase “hair care composition” include, but are not limited to liquids, creams, wipes, hair conditioners (rinse-off and leave-on), hair tonics, shampoos, hair colorants, mousses, propellant lotions, emulsions, shave gels, after-shave tonics and lotions, temporary beard hair dyes, and the like.
“Prevent oxidative damage in hair” means the region of hair (e.g., scalp, beard) has less oxidative damage than untreated regions. This is demonstrated when the hair shafts in the subject region of hair are prevented from experiencing oxidation by a statistically significant amount, when a composition of the present invention is used for a result-effective period of time.
“Mammalian hair,” as referenced herein, includes hair on any part of the body of a mammal, and can include but is not limited to facial, cranial, or body hair. For instance, it can include hair on the scalp, head, neck, beard, moustache, eyebrows and sideburns hair.
As used herein, the term “follicular fungi reduction agent” or “FFRA” means any material that reduces and/or can reduce the number of fungi present in hair follicles.
The term “topical application,” as used herein, means to apply or spread the compositions of the present invention onto the surface of the keratinous tissue from which the hair to be affected grows, and/or to the hair itself.
The term “dermatologically-acceptable,” as used herein, means that the compositions or components thereof so described are suitable for use in contact with mammalian keratinous tissue without undue toxicity, incompatibility, instability, allergic response, and the like.
The term “effective amount,” as used herein, means an amount of a compound or composition sufficient to decrease the amount of oxidative damage of the hair shaft in the subject region of hair by a statistically significant amount.
The term “result-effective period of time,” as used herein, means a period of time sufficient to decrease the amount of oxidative damage of the hair shaft in the subject region of hair by a statistically significant amount.
The term “safe and effective amount,” as used herein, means an amount of a compound or composition sufficient to decrease the amount of oxidative damage of the hair shaft in the subject region of hair by a statistically significant amount, but low enough to avoid serious side effects, i.e., to provide a reasonable benefit to risk ratio, within the scope of sound judgment of the skilled artisan.
The term “ambient conditions,” as used herein, refers to surrounding conditions under about one atmosphere of pressure, at about 50% relative humidity, and at about 25° C., unless otherwise specified.
I. Hair Care Compositions Comprising FFRAs for Preventing Oxidative Damage
In one aspect, the present invention provides hair care compositions that can be used to prevent oxidative damage in hair. In one embodiment, the hair care composition comprises an FFRA. In another embodiment, the hair care composition comprises two or more FFRAs.
Preferably, the FFRA(s) is present in an effective amount, more preferably in a safe and effective amount. As used herein, the singular term “FFRA” is broad enough to include one or a combination of more than one FFRA. Optionally, the hair care compositions can comprise a dermatologically-acceptable carrier and/or any desired suitable optional ingredients.
Not wishing to be bound by theory, at least one source of oxidative hair damage can be attributed to the presence of Malassezia on the hair in the infundibulum region. As shown in
Table 1 provides further evidence of the presence of Malassezia in this region based on fungal cell counts obtained using swab (scalp) and pluck (follicle) extraction assays. The values represent the average number of Malassezia globosa, Malassezia restricta, or total fungi cells contained in a sample (n˜100) obtained in each assay. The swab sample is collected by “swabbing” the surface of a subject's scalp. A pluck sample is a plucked hair with fungi located in the follicle and in very close proximity of the follicle infundibulum. The high density of cells obtained from the pluck assay indicates a fungal affinity for the follicle and follicle infundibulum.
M. restricta on scalp
M. globosa on scalp
The present investigators believe that Malassezia produces substances that can oxidatively damage hair. Oxidation of the hair causes damage to the cuticle structure, thereby reducing hair strength and resistance to other damage factors. Although not wishing to be limited by theory, the present investigators hypothesize that M. globosa cells cause oxidative damage to hair through one or more mechanisms. For example, Malassezia cells secrete aryl alcohol oxidase, which has been demonstrated to produce hydrogen peroxide (See Xu, J., et al; Proceedings of the National Academy of Science, USA, (2007), 104(47), 18731). Exposure to H2O2 can cause oxidative damage to hair (see Robbins, C. R.; Chemical and Physical Behavior of Human Hair, 3rd ed., p. 131, Springer-Verlag (New York)).
At a skin-relevant pH of 5.5, a significant fluorescence signal is observed due to the action of Malassezia on substrate. The oxidative species produced by the cells cause significant fluorescence. This fluorescence is quenched when a reducing species, like ethoxyquin (EQ), is added to the mixture. No fluorescence is observed from the Malassezia cells when no substrate is present or from the substrate alone, without the Malassezia cells.
Other possible mechanisms may cause oxidative damage to the hair, as Malassezia are known to secrete approximately 500 different proteins. (See Xu, J., et al; Proceedings of the National Academy of Science, USA, (2007), 104(47), 18731). Many have unknown function, but some are certainly lipase-like in nature and can damage hair cuticle structure. (See DeAngelis et al; J. Invest. Dermatol. 127, 2138.)
To demonstrate this hypothesis, the present investigators conducted a split-head clinical study, comparing the caffeine/niacinamide/panthenol FFRA formulation (delivered from a tonic) to a variety of in-market products which claim to improve hair quality but do not containing FFRAs. As shown by
Oxidative damage to hair can be measured by examining the ratio of diamond ATR-IR-spectra bands for SO3═ and amide present in the hair. Specifically, the presence of SO3═ is an indicator of oxidative damage in hair. Therefore, a low SO3═: amide ratio indicates lower oxidative damage. Variables in hair sample size are controlled by normalizing results to the amide content (a relative constant) in the hair sample.
Based upon these results, it is reasonable to conclude that FFRAs can prevent oxidative damage by removing Malassezia. Since a wide range of other materials have also been shown to remove Malassezia in both a leave-on and shampoo rinse-off context, these actives should also produce a similar prevention of oxidative damage.
Compositions comprising FFRAs can be in any suitable form, such as a liquid, cream, shampoo, conditioner, mousse, or tonic. Furthermore, any suitable FFRA can be used herein, in a safe and effective amount. Although one skilled in the art will be able to determine the appropriate amount of a particular FFRA to include in a particular composition, typical concentrations of FFRAs included in compositions can be 0.1-10%, and in other embodiments from 0.5-5% for rinse off products such as shampoos and conditioners; furthermore, they can be 0.001-0.5%, and in other embodiment from 0.005-0.5%, and in still other embodiments from 0.01-0.1 %, for leave-in treatments such as tonics or mousses. In some embodiments, the FFRA is selected from the group consisting of: pantothenic acid and pantothenic acid derivatives (e.g., panthenol), Vitamin B3 compounds (e.g., niacinamide), pyridinethione salts, zinc carbonate, ketoconazole, itraconazole, econazole, elubiol, selenium sulfide, sulfur, coal tar, sulfur, whitfield's ointment, castellani's paint, aluminum chloride, gentian violet, piroctone olamine, ciclopirox olamine, undecylenic acid and its metal salts, potassium permanganate, selenium sulphide, sodium thiosulfate, oil of bitter orange, urea preparations, griseofulvin, 8-Hydroxyquinoline ciloquinol, thiobendazole, thiocarbamates, haloprogin, polyenes, hydroxypyridone, morpholine, benzylamine, allylamines, tea tree oil, clove leaf oil, coriander, palmarosa, berberine, thyme red, cinnamon oil, cinnamic aldehyde, citronellic acid, hinokitol, ichthyol pale, azelaic acid, iodopropynyl butylcarbamate (IPBC), isothiazalinones (e.g., octyl isothiazalinone and azoles), and combinations thereof.
The FFRA can also be combined with other suitable materials as desired. In a particular embodiment, the FFRA is combined with a material selected from the group consisting of butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA), xanthines (e.g. caffeine), agmatine, aminoguanidine, ethoxyquin, cetyl pyridinium chloride, green tea extract, catechins, phytosterols, ursolic acid, plant extracts, plant extract compounds, 3-butylidenepthalide, its salts, its derivatives, and mixtures thereof, keratolytic agents (e.g., salicylic acid), and combinations thereof.
In a particular embodiment, the FFRA comprises a vitamin B3 compound (e.g., niacinamide) in combination with another material selected from the group consisting of a xanthene (e.g., caffeine), a pantothenic acid derivative (e.g., panthenol), and mixtures thereof. In another embodiment, the FFRA comprises a pantothenic acid derivative (e.g., panthenol) in combination with another material selected from the group consisting of a xanthene (e.g., caffeine), a vitamin B3 compound (e.g., niacinamide), and mixtures thereof Particular materials, including FFRAs and suitable materials that can be combined with FFRAs, are described in more detail below.
A. Vitamin B3 Compounds
The compositions of the present invention can include an effective amount of a vitamin B3 compound. Vitamin B3 compounds include those described in U.S. Pat. No. 5,939,082. In particular embodiments, the composition can alternatively comprise from 0.001% to 50%, from 0.01% to 20%, from 0.05% to 10%, from 0.1% to 7%, or from 0.5% to 5%, by weight of the composition, of the vitamin B3 compound.
As used herein, “vitamin B3 compound” means a compound having the formula:
wherein R is —CONH2 (i.e., niacinamide), —COOH (i.e., nicotinic acid) or —CH2OH (i.e., nicotinyl alcohol); derivatives thereof; and salts of any of the foregoing.
Exemplary derivatives of the foregoing vitamin B3 compounds include nicotinic acid esters, including non-vasodilating esters of nicotinic acid (e.g, tocopherol nicotinate, myristyl nicotinate), nicotinyl amino acids, nicotinyl alcohol esters of carboxylic acids, nicotinic acid N-oxide and niacinamide N-oxide.
Suitable esters of nicotinic acid include nicotinic acid esters of C1-C22, preferably C1-C16, more preferably C1-C6 alcohols. The alcohols are suitably straight-chain or branched chain, cyclic or acyclic, saturated or unsaturated (including aromatic), and substituted or unsubstituted. The esters are preferably non-vasodilating. As used herein, “non-vasodilating” means that the ester does not commonly yield a visible flushing response after application to the skin in the subject compositions (the majority of the general population would not experience a visible flushing response, although such compounds may cause vasodilation not visible to the naked eye, i.e., the ester is non-rubifacient). Non-vasodilating esters of nicotinic acid include tocopherol nicotinate and inositol hexanicotinate; tocopherol nicotinate is preferred.
Other derivatives of the vitamin B3 compound are derivatives of niacinamide resulting from substitution of one or more of the amide group hydrogens. Nonlimiting examples of derivatives of niacinamide useful herein include nicotinyl amino acids, derived, for example, from the reaction of an activated nicotinic acid compound (e.g., nicotinic acid azide or nicotinyl chloride) with an amino acid, and nicotinyl alcohol esters of organic carboxylic acids (e.g., C1-C18). Specific examples of such derivatives include nicotinuric acid (C8H8N2O3) and nicotinyl hydroxamic acid (C6H6N2O2), which have the following chemical structures: nicotinuric acid:
nicotinyl hydroxamic acid:
Exemplary nicotinyl alcohol esters include nicotinyl alcohol esters of the carboxylic acids salicylic acid, acetic acid, glycolic acid, palmitic acid and the like. Other non-limiting examples of vitamin B3 compounds useful herein are 2-chloronicotinamide, 6-aminonicotinamide, 6-methylnicotinamide, n-methyl-nicotinamide, n,n-diethylnicotinamide, n-(hydroxymethyl)-nicotinamide, quinolinic acid imide, nicotinanilide, n-benzylnicotinamide, n-ethylnicotinamide, nifenazone, nicotinaldehyde, isonicotinic acid, methyl isonicotinic acid, thionicotinamide, nialamide, 1-(3-pyridylmethyl) urea, 2-mercaptonicotinic acid, nicomol, and niaprazine.
Examples of the above vitamin B3 compounds are well known in the art and are commercially available from a number of sources, e.g., the Sigma Chemical Company (St. Louis, Mo.); ICN Biomedicals, Inc. (Irvin, Calif.) and Aldrich Chemical Company (Milwaukee, Wis.).
One or more vitamin B3 compounds may be used herein. Preferred vitamin B3 compounds are niacinamide and tocopherol nicotinate. Niacinamide is more preferred.
When used, salts, derivatives, and salt derivatives of niacinamide are preferably those having substantially the same efficacy as niacinamide.
Salts of the vitamin B3 compound are also useful herein. Nonlimiting examples of salts of the vitamin B3 compound useful herein include organic or inorganic salts, such as inorganic salts with anionic inorganic species (e.g., chloride, bromide, iodide, carbonate, preferably chloride), and organic carboxylic acid salts (including mono-, di- and tri-C1-C18 carboxylic acid salts, e.g., acetate, salicylate, glycolate, lactate, malate, citrate, preferably monocarboxylic acid salts such as acetate). These and other salts of the vitamin B3 compound can be readily prepared by the skilled artisan, for example, as described by W. Wenner, “The Reaction of L-Ascorbic and D-Iosascorbic Acid with Nicotinic Acid and Its Amide”, J. Organic Chemistry, Vol. 14, 22-26 (1949). Wenner describes the synthesis of the ascorbic acid salt of niacinamide.
In a preferred embodiment, the ring nitrogen of the vitamin B3 compound is substantially chemically free (e.g., unbound and/or unhindered), or after delivery to the skin becomes substantially chemically free (“chemically free” is hereinafter alternatively referred to as “uncomplexed”). More preferably, the vitamin B3 compound is essentially uncomplexed. Therefore, if the composition contains the vitamin B3 compound in a salt or otherwise complexed form, such complex is preferably substantially reversible, more preferably essentially reversible, upon delivery of the composition to the skin. For example, such complex should be substantially reversible at a pH of from about 5.0 to about 6.0. Such reversibility can be readily determined by one having ordinary skill in the art.
More preferably the vitamin B3 compound is substantially uncomplexed in the composition prior to delivery to the keratinous tissue. Exemplary approaches to minimizing or preventing the formation of undesirable complexes include omission of materials which form substantially irreversible or other complexes with the vitamin B3 compound, pH adjustment, ionic strength adjustment, the use of surfactants, and formulating wherein the vitamin B3 compound and materials which complex therewith are in different phases. Such approaches are well within the level of ordinary skill in the art.
Thus, in a preferred embodiment, the vitamin B3 compound contains a limited amount of the salt form and is more preferably substantially free of salts of a vitamin B3 compound. Preferably the vitamin B3 compound contains less than about 50% of such salt, and is more preferably essentially free of the salt form. The vitamin B3 compound in the compositions hereof having a pH of from about 4 to about 7 typically contain less than about 50% of the salt form.
The vitamin B3 compound may be included as the substantially pure material, or as an extract obtained by suitable physical and/or chemical isolation from natural (e.g., plant) sources. The vitamin B3 compound is preferably substantially pure, more preferably essentially pure.
B. Panthenol and Pantothenic Acid Derivatives
The compositions of the present invention may comprise an effective amount of panthenol and/or pantothenic acid derivatives. Panthenol and its derivatives can include D-panthenol ([R]-2,4-dihydroxy-N-[3-hydroxypropyl)]-3,3-dimethylbutamide), DL-panthenol, pantothenic acids and their salts, preferably the calcium salt, panthenyl triacetate, royal jelly, panthetine, pantotheine, panthenyl ethyl ether, pangamic acid, pantoyl lactose, Vitamin B complex, or mixtures thereof.
Compositions comprising pantothenic acid derivatives that remain more stable than panthenol and other similar materials in acidic compositions or in compositions containing acid-producing materials such as aluminum-containing actives, can also be suitable for use herein. The selected pantothenic acid derivatives are most typically in liquid form and dispersed throughout or otherwise solubilized within the liquid carrier component of the composition.
The term “pantothenic acid derivative” as used herein refers to those materials that conform to the formula:
wherein R1, R2 and R3 are hydrogen, C2-C20 hydrocarbons, C2-C20 carboxylic acid esters, or combinations thereof, provided that not more than two of R1, R2 and R3 are hydrogen. In one embodiment, R1, R2 and R3 are independently selected from hydrogen, C2-C8 hydrocarbons, C2-C8 carboxylic acid esters, or combinations thereof; in another embodiment, R1 and R2 are hydrogen, and R3 is a C2-C8 hydrocarbon, C2-C8 carboxylic acid ester, or combinations thereof; in yet another embodiment, R1 and R2 are hydrogen and R3 is ethyl. The selected pantothenic acid derivatives may be derived or otherwise obtained from any known source, which may include pantothenic acid or materials other than pantothenic acid, so long as the resulting material has the above defined chemical formula.
Specific non-limiting examples of selected pantothenic acid derivatives for use herein include ethyl panthenol, panthenyl triacetate, and combinations thereof. In a particular embodiment, a pantothenic acid derivative comprises the d-isomeric form(s) of such derivative form(s), such as d-ethyl panthenol.
In one embodiment, the panthenol and/or pantothenic acid derivative is used, alternatively, in an amount of from 0.01% to 10%, from 0.1% to 5%, or from 0.2% to 3%, by weight of the composition.
C. Anti-Dandruff Actives
The compositions of the present invention may also comprise an anti-dandruff agent as an FFRA herein. Suitable, non-limiting examples of anti-dandruff particulates include: pyridinethione salts, zinc carbonate, azoles, such as ketoconazole, econazole, and elubiol, selenium sulfide, particulate sulfur, and mixtures thereof. A typical anti-dandruff particulate is pyridinethione salt. Such anti-dandruff particulate should be physically and chemically compatible with the components of the composition, and should not otherwise unduly impair product stability, aesthetics or performance.
Pyridinethione anti-dandruff particulates, especially 1-hydroxy-2-pyridinethione salts, are suitable particulate anti-dandruff agents for use in compositions of the present invention. The concentration of pyridinethione anti-dandruff particulate typically ranges from 0.01% to 4%, by weight of the composition, generally from 0.05% to 3%, commonly from 0. 1 % to 2%. Suitable pyridinethione salts include those formed from heavy metals such as zinc, tin, cadmium, magnesium, aluminum and zirconium, generally zinc, typically the zinc salt of 1-hydroxy-2-pyridinethione (known as “zinc pyridinethione” or “ZPT”), commonly 1-hydroxy-2-pyridinethione salts in platelet particle form, wherein the particles have an average size of up to about 20μ, typically up to about 5μ, commonly up to about 2.5μ. Salts formed from other cations, such as sodium, may also be suitable. Pyridinethione anti-dandruff agents are described, for example, in U.S. Pat. No. 2,809,971; U.S. Pat. No. 3,236,733; U.S. Pat. No. 3,753,196; U.S. Pat. No. 3,761,418; U.S. Pat. No. 4,345,080; U.S. Pat. No. 4,323,683; U.S. Pat. No. 4,379,753; and U.S. Pat. No. 4,470,982.
D. Anti-Microbial Actives
The compositions of the present invention may also comprise an anti-microbial active as an FFRA herein Suitable anti-microbial actives include coal tar, sulfur, whitfield's ointment, castellani's paint, aluminum chloride, gentian violet, octopirox (piroctone olamine), ciclopirox olamine, undecylenic acid and it's metal salts, potassium permanganate, selenium sulphide, sodium thiosulfate, propylene glycol, oil of bitter orange, urea preparations, griseofulvin, 8-Hydroxyquinoline ciloquinol, thiobendazole, thiocarbamates, haloprogin, polyenes, hydroxypyridone, morpholine, benzylamine, allylamines (such as terbinafine), tea tree oil, clove leaf oil, coriander, palmarosa, berberine, thyme red, cinnamon oil, cinnamic aldehyde, citronellic acid, hinokitol, ichthyol pale, Sensiva SC-50, Elestab HP-100, azelaic acid, lyticase, iodopropynyl butylcarbamate (IPBC), isothiazalinones such as octyl isothiazalinone and azoles, and combinations thereof. Typical anti-microbials include itraconazole, ketoconazole, selenium sulphide and coal tar. 1. Azoles
Azole anti-microbials include imidazoles such as benzimidazole, benzothiazole, bifonazole, butaconazole nitrate, climbazole, clotrimazole, croconazole, eberconazole, econazole, elubiol, fenticonazole, fluconazole, flutimazole, isoconazole, ketoconazole, lanoconazole, metronidazole, miconazole, neticonazole, omoconazole, oxiconazole nitrate, sertaconazole, sulconazole nitrate, tioconazole, thiazole, and triazoles such as terconazole and itraconazole, and combinations thereof. In some embodiments, of the composition, the azole anti-microbial active is included in an amount from 0.01% to 5%, or from 0.1% to 3%, or from 0.3% to 2%, by weight of the composition. Especially preferred for use herein is ketoconazole.
2. Selenium Sulfide
Selenium sulfide is a particulate anti-dandruff agent suitable for use in the compositions of the present invention. In some embodiments, concentrations can range alternatively from 0.01% to 4%, by weight of the composition, or from 0.05% to 3%, or from 0.1 % to about 2%. Selenium sulfide is generally regarded as a compound having one mole of selenium and two moles of sulfur, although it may also be a cyclic structure that conforms to the general formula SexSy, wherein x+y=8. Average particle diameters for the selenium sulfide are typically less than 15 μm, as measured by forward laser light scattering device (e.g. Malvern 3600 instrument), typically less than 10 μm. Selenium sulfide compounds are described, for example, in U.S. Pat. No. 2,694,668; U.S. Pat. No. 3,152,046; U.S. Pat. No. 4,089,945; and U.S. Pat. No. 4,885,107.
3. Sulfur
Sulfur may also be used in the compositions of the present invention. Effective concentrations of the particulate sulfur can, in some embodiments, range alternatively from 1% to 4%, by weight of the composition, or from 2% to 4%.
E. Xanthine Compounds
The compositions of the present invention can include a xanthine compound. As used herein, “xanthine compound” means one or more xanthines, derivatives therof, and mixtures thereof. Xanthine Compounds that can be useful herein include, but are not limited to, caffeine, xanthine, 1-methyl xanthine, theophylline, theobromine, derivatives thereof, and mixtures thereof. In one embodiment, the composition comprises from about 0.1% to about 10% of a xanthine compound, in another embodiment from about 0.5% to about 5% of a xanthine compound, and in yet another embodiment from about 1% to about 2% of a xanthine compound.
In some embodiments, the FFRA composition comprises a mixture of a xanthine compound, a vitamin B3 compound, and a panthenol compound. In a particular embodiment, the synergistic mixture comprises caffeine, niacinamide, and panthenol. In one embodiment, the composition comprises from about 0.1% to about 10% of a xanthine compound (e.g., caffeine), in another embodiment from about 0.5% to about 5% of a xanthine compound, and in yet another embodiment from about 1% to about 2% of a xanthine compound. In some embodiments, the composition comprises from about 0.1% to about 25% of a vitamin B3 compound (e.g., niacinamide), in another embodiment from about 0.5% to about 15% of a vitamin B3 compound, and in yet another embodiment from about 3.5% to about 7.5% of a vitamin B3 compound. In some embodiments, the composition comprises from about 0.01% to about 3% of a panthenol compound (e.g., panthenol), in another embodiment from about 0.02% to about 1% of a panthenol compound, and in yet another embodiment from about 0.2% to about 0.5% of a panthenol compound. The composition can optionally comprise any other suitable ingredients as desired. In one embodiment, the composition also comprises a thickener that helps to hold the active agents on the scalp, providing substantivity to the composition, such that it does not drip undesirably onto unintended areas of the body, clothing, or home furnishings.
The present invention also provides a method for preventing oxidative damage of hair, leading to an appearance of shinier, more manageable hair. In one aspect, the method comprises applying a hair care composition comprising a FFRA to a skin surface from which a region of styled hair grows. For instance, the hair care composition can be applied to the scalp and/or face (e.g., beard or moustache area). In another embodiment, the method comprises topically applying a hair care composition comprising an effective amount of a FFRA to a region of skin of a mammal seeking to prevent oxidative damage in hair.
The region of hair can be located on any part of the body. For instance, it can grow from a skin surface located on at least a portion of the scalp or the face or the neck.
In still another embodiment, the method comprises applying the composition according to a regimen, wherein said regimen comprises:
In another aspect, the present invention provides methods of marketing and methods of marketing hair care compositions that can be used to prevent oxidative damage in hair. In one embodiment, the method of marketing comprises:
(1) a container;
(2) a hair care composition contained within said container, wherein said hair care composition comprises a FFRA; and
(3) a communication, wherein said communication communicates that use of said hair care composition can prevent oxidative damage in hair.
In another aspect, the present invention provides methods of marketing hair care compositions that can be used to prevent oxidative damage in hair. In one embodiment, the method comprises:
(a) offering for sale a hair care composition comprising a FFRA;
(b) communicating that said composition can be used to prevent oxidative damage in hair.
In another aspect, the invention provides a marketing method that utilizes a comparison of a first hair care composition to a second hair care composition, in order to market the first hair care composition. In one embodiment, the method comprises offering for sale a first method of marketing, wherein said first method of marketing comprises:
(a) a first hair care composition; and
(b) a communication, wherein said communication compares said first hair care composition to a second hair care composition, wherein said second hair care composition is comprised in a second method of marketing, wherein said second method of marketing comprises:
In another aspect, the invention provides a marketing method that utilizes at least one visual cue to communicate that a first hair care composition is similar to or the same as a second hair care composition, in order to market the first hair care composition. In one embodiment, the visual cue comprises a message. In particular embodiments, the message can comprise words such as “compare,” “compare to”, “like”, “similar”, “try instead of,” or the like. In another embodiment, the visual cue can comprise the same or similar graphics as those included on or near the packaging of the second hair care composition. A visual cue can be located at or on any suitable location. For instance, a visual cue can be located on or near product packaging, or on or near a store shelf.
In a particular embodiment, the first hair care composition is marketed in a container having at least two of the same colors as the container in which the second hair care composition is marketed. In one embodiment, the method comprises a method of marketing a first hair care composition, wherein said method comprises:
(a) offering for sale a first method of marketing, wherein said first method of marketing comprises:
(b) locating said first method of marketing within visual sight of a second method of marketing, wherein said second method of marketing comprises:
As used herein, the term “potential consumer” means an actual or potential purchaser and/or an actual or potential user of the method of marketing and/or hair care composition.
Any container from which the hair care composition can be stored and/or contained can be used herein. Suitable containers can include, but are not limited to, bottles, tottles, tubes, pouches, boxes, tubs, and cans. Furthermore, containers can include primary containers, which contain the hair care composition itself, or secondary containers, which contain at least one primary container that contains the composition.
As used herein, “set of graphics” or “graphics” refers to the text and/or pictorial images that are disposed on a container. As used herein, “disposed on” means integral with and/or located on the container and can include, but is not limited to, disposed directly thereon (e.g., printed directly on the container), disposed indirectly thereon (e.g., printed on a sticker that is affixed to the outer portion of the container), and/or applied to the container by any other suitable means (e.g., sprayed, bonded, drawn, painted, printed, or molded).
As used herein, “communication” means a message, and can include but is not limited to a printed (e.g., printed material attached directly or indirectly to the container), electronic, or broadcast message.
Optionally, said first method of marketing and said second method of marketing can be located within visual sight of one another. In a particular embodiment, said first method of marketing and said second method of marketing can be located adjacent to one another on a retail shelf or other retail display.
As used herein, “located within visual sight” of one another” means that the first method of marketing and the second method of marketing are located in proximity to one another such that a human with unassisted 20/20 vision can see both the first method of marketing and the second method of marketing at the same time. In a particular embodiment, said first method of marketing and said second method of marketing are located within 2 meters of each other. In another embodiment, said first method of marketing and said second method of marketing are located within 1 meter of each other. In a specific embodiment, said first method of marketing and said second method of marketing are located within 0.5 meter of each other.
As used herein, “similar” means alike in someway. For instance, alike in composition, composition of active ingredients, and/or benefits that can be provided from use of the composition.
The following are non-limiting examples of the present invention. The examples are given solely for the purpose of illustration and are not to be construed as limitations of the present invention, as many variations thereof are possible without departing from the spirit and scope of the invention, which would be recognized by one of ordinary skill in the art.
In the examples, all concentrations are listed as weight percent, unless otherwise specified and may exclude minor materials such as diluents, filler, and so forth. The listed formulations, therefore, comprise the listed components and any minor materials associated with such components. As is apparent to one of ordinary skill in the art, the selection of these minors will vary depending on the physical and chemical characteristics of the particular ingredients selected to make the present invention as described herein.
The shampoo of Example 1 is packaged into a blue and white container and offered for sale to consumers at a retail store. A label on the container communicates that when this shampoo is used to wash hair, it will help to prevent oxidative damage in hair.
A shampoo contained in a blue and white bottle (herein “Subject Shampoo”) is located on a shelf next to the shampoo of Example 11. A label is attached to the Subject Shampoo's bottle which directs the consumer to compare the Subject Shampoo to the shampoo of Example 11.
In a clinical study, the researchers collected hairs at Week 12 and assessed oxidative damage by measuring the ratio of cysteic acid (SO3=)/Amide using ATR-IR. The passages below explain the clinical and the data. The next section describes ATR-IR as a valid method to assess oxidative damage.
This was a fourteen week, double blinded, randomized, split-head and controlled clinical study in women, ages 18-65 (inclusive) who perceived themselves as having thinning hair. This study consisted of a 2 week pre-treatment phase followed by a 12 week treatment phase.
Hair samples were collected by plucking hairs proximal to the imaging site at Baseline and Week 12 from each side of the head and sent to the researchers. Upon arrival, samples were processed using ATR-IR to determine the level of oxidative damage (as measured by level of cysteic acid) at the beginning and end of treatment. Treatment product was compared to placebo to determine any beneficial effects from the treatment leg.
Levels of cysteic acid are measured by ATR-IR (Attenuated Total Reflectance-Fourier Transform Infra-Red). For each hair fiber, the level of cysteic acid (oxidation product) was determined from 1, 3, 5, 7, 10, and 50mm distal from the inner root sheath at Week 12. Measurements taken from 1-10 mm distal from the inner root sheath represent new growth of hair during the clinical trial. All cysteic acid levels/hair were normalized to protein concentration (Amide). Simplistically, ATR-IR is a microscope that emits infra-red and analyzes the reflectance from the hair. The operator is able to focus on the specific region of interest on the surface of the hair, to measure the amount of cysteic acid (SO3= and Amide) from precise areas along the hair fiber. The resultant data is expressed and SO3=/Amide; the higher the number, the higher the ratio of SO3=/Amide (less SO3=/more Amide) and thus, the greater the oxidative damage.
As demonstrated by
Oxidation results between Test Product and Placebo at Week 12 is shown in Table 7. A higher ratio (larger number) indicates a greater level of oxidative damage.
The measurement of disulfide oxidation was measured using Attenuated Total Reflectance-Fourier Transform Infra-Red (ATR-IR) fitted with a diamond crystal. This employs the use of infra-red, at specific infra-red absorptions to target cysteic acid using a microscope setup. This system allows the assessment of oxidative damage on the surface of the hair, at specific points along the hair shaft.
FT-IR spectroscopy in attenuated total reflectance (ATR) mode has been mainly used to study the oxidation of hair and, more precisely, its photodamage and the photoprotection afforded by different ingredients. Cysteic acid and other cystine oxides give well-defined absorption peaks. Diamond cell ATR, which enables to apply higher pressure on the sample and thus contributes to a better contact, provided more reproducible results than conventional ATR crystal. (The Science of Hair Care, 2nd edition. Edited by Claude Bouillon and John Wilkinson. Pg 421) The microscope technique is the most useful method as reproducible spectra with good transmission ranges and reduced noise levels are obtained. This technique is particularly suitable when small areas of a fiber are to be examined. The use of second order derivative spectroscopy allows small changes in oxidative damage to be assessed and gives an opportunity for the quantitative analyses of sulfur oxidation products of cystine. (Joy-M and Lewis-D M. The use of Fourier transform infra-red spectroscopy I the study of the surface chemistry of hair fibers. International Journal of Cosmetic Science 13, 249-261 (1991))
These results demonstrate an increase in oxidation of cystine to cysteic acid as measurements are taken progressively distal from the scalp along the hair fiber in the Test Product Placebo leg. These results mimic those found in externally published results on the effects of natural weathering. (Comparison of root end and tip end of hair allows one to examine the effects of natural weathering. Cysteic acid was found to increase going from root to tip, although the degree of increase was found to be quite variable. As weathering (exposure to sunlight, wind and grooming, etc.) increases, the intensity of the cysteic acid band at 1040 cm−1 increases. (Martin-K. 4. Infrared and Raman Studies of Skin and Hair: A review of cosmetic spectroscopy. The Internet Journal of Vibrational Spectroscopy. Volume 3, Edition 2 (1999)—Unilever) Results indicate that the concentration of cysteic acid in natural untreated hair increases from root to tip. (Joy-M and Lewis-D M. The use of Fourier transform infra-red spectroscopy I the study of the surface chemistry of hair fibres. International Journal of Cosmetic Science 13, 249-261 (1991))
In summary, this clinical study shows that the test formulation of Caffeine/Niacinamide/Panthenol reduces the oxidative damage to the hair. This is supported by: (1) Test Product significantly decreased the level of oxidation vs. placebo in a human clinical study, (2) The method used to measure the level of oxidation (ATR-IR) is a well recognized method, and (3) the observation of increased oxidation along the hair shaft from root to tip agrees with the published literature.
The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm”.
While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
All documents cited herein are incorporated herein by reference in their entirety, except to the extent that any part of such documents conflict with the teachings of the present application; the citation of any document is not to be construed as an admission that it is prior art with respect to the present invention.
This application claims the benefit of U.S. Provisional Application No. 61/049,202 filed Apr. 30, 2008.
| Number | Date | Country | |
|---|---|---|---|
| 61049202 | Apr 2008 | US |
