Composition for coloring keratinous fibers

Abstract

Composition for coloring keratinous fibers. The present invention relates to a composition comprising: (a) at least one polylysine, and (b) at least one coloring agent selected from dyes and pigments, wherein the dyes are selected from oxidative dyes and direct dyes other than iridoid dyes, wherein the (a) polylysine has a weight-average molecular weight in the range of 4,500 g / mol to 25,000 g / mol and is not covalently bonded to either the dyes or the polyorganosiloxane, and the composition has a pH value from 8 to 12. Figure for abstract: none

Description

Title of the invention: Composition for coloring keratinous fibers technical field

[0001] The present invention relates to a composition, in particular a cosmetic composition for coloring keratinous fibers such as hair. ART CONTEXT

[0002] It is known to dye keratinous fibers, particularly human hair, with dye compositions containing oxidative color precursors, generally called oxidative bases, such as ortho- or para-phenylenediamines, ortho- or para-aminophenols, and heterocyclic compounds. These oxidative bases are generally combined with couplers. These bases and couplers are colorless or weakly colored compounds which, when combined with oxidizing agents, can give rise to colored compounds through an oxidative condensation process.

[0003] This type of oxidation coloring makes it possible to obtain very high visibility colors, and the possibility of covering white hair in a wide variety of shades, but it causes damage to keratinous fibers due to the use of oxidizing agents and alkaline agents (in particular by repeated application or by combination with other hair treatments).

[0004] On the other hand, it is also known to dye keratinous fibers, particularly human hair, with dye compositions containing direct dyes. Classic direct dyes include, in particular: benzene nitrates, anthraquinones, nitropyridines, azo dyes, xanthines, acridines, azines, triarylmethane-type dyes, and natural dyes. Coloring hair with direct dyes has advantages over coloring hair with oxidative dyes: it rarely causes allergic reactions, it damages the hair less, and it provides a vibrant color, but it has the disadvantage of less colorfastness to shampooing.

[0005] For example, documents FR2980704A1, FR2980700A1, FR 2922445Al, FR 2922446A1, US2009 / 070945A1, US2011 / 296631A1, WO2018 / 137587, US2020 / 368005A1, and EP1604647A1 disclose compositions for hair dyeing. DISCLOSURE OF THE INVENTION

[0006] An objective of the present invention is to propose a new composition for the coloring of keratinous fibers, such as hair, which can offer keratinous fibers improved color intensity and color durability.

[0007] The above objective of the present invention can be achieved by a composition comprising:

[0008] (a) at least one polylysine, and

[0009] (b) at least one coloring agent selected from dyes and pigments, where the Dyes are chosen from among oxidative dyes and direct dyes other than iridoid dyes,

[0010] wherein (a) polylysine has a weight average molecular weight in the range of 4,500 g / mol to 25,000 g / mol and is covalently bonded neither to the dyes nor to the polyorganosiloxane, and the composition has a pH value ranging from 8 to 12.

[0011] The composition may include (b) at least one coloring agent selected from oxidative dyes, and the composition includes at least one additional alkaline agent.

[0012] Where the composition comprises (b) at least one colouring agent selected from oxidative dyes and at least one additional alkaline agent, the alkaline agent(s) may be present in an amount of 1% by weight or more, preferably 2% by weight or more, more preferably 3% by weight or more, and even more preferably 4% by weight or more; and / or 20% by weight or less, preferably 15% by weight or less, more preferably 10% by weight or less, and even more preferably 8% by weight or less, relative to the total weight of the composition.

[0013] In another embodiment, the composition comprises (b) at least one dye selected from the direct dyes, and the composition comprises at least one additional alkaline agent in an amount of less than 1% by weight, preferably less than 0.5% by weight, more preferably less than 0.1% by weight, and even more preferably less than 0.05% by weight, relative to the total weight of the composition.

[0014] The (a) polylysine can be an epsilon-polylysine.

[0015] (a) Polylysine may have a weight-average molecular weight in the range of 4,500 g / mol to 20,000 g / mol.

[0016] The (a) polylysine(s) may be present in the composition in an amount of 0.05% to 10% by weight, preferably 0.1% to 5% by weight, more preferably 0.2% to 3% by weight, and even more preferably 0.3% to 2% by weight, relative to the total weight of the composition.

[0017] The (a) polylysine can be in free form.

[0018] The dye can be chosen from those which are available in free form.

[0019] The composition may include at least one acid in an amount less than 5% by weight, preferably less than 3% by weight, more preferably less than 1% by weight, even more preferably less than 0.3% by weight, and in particular less than 0.1% by weight, relative to the total weight of the composition.

[0020] The composition can be intended for coloring keratinous fibers with improved color intensity and color durability.

[0021] The present invention also relates to a cosmetic process for coloring keratinous fibers, preferably hair, comprising a step of applying the composition according to the present invention to the keratinous fibers.

[0022] The present invention also relates to a use of (a) polylysine to enhance the color intensity and color durability of keratinous fibers colored with (b) at least one coloring agent selected from dyes and pigments, wherein the dyes are selected from oxidative dyes and direct dyes other than iridoid dyes and (a) polylysine has a weight-average molecular weight in the range of 4,500 g / mol to 25,000 g / mol. Best embodiment of the invention

[0023] After diligent research, the inventors have found surprisingly that the composition according to the present invention can accentuate the color intensity and durability of the colored keratinous fiber.

[0024] Thus, the present invention relates to a composition, preferably a composition for coloring keratinous fibers, comprising:

[0025] (a) at least one polylysine, and

[0026] (b) at least one coloring agent selected from dyes and pigments, where the Dyes are chosen from among oxidative dyes and direct dyes other than iridoid dyes,

[0027] wherein (a) polylysine has a weight average molecular weight in the range of 4,500 g / mol to 25,000 g / mol and is covalently bonded neither to the dyes nor to the polyorganosiloxane, and the composition has a pH value ranging from 8 to 12.

[0028] Another aspect of the present invention is a process for coloring keratinous fibers by applying to the keratinous fibers the composition according to the present invention above.

[0029] In this specification, the upper and lower limits of the numerical ranges may be combined arbitrarily. For example, all combinations of upper and lower limits of a numerical range for the content of each ingredient are available and fall within the scope of disclosure in this specification.

[0030] The composition and process according to the present invention will each be described in detail below.

[0031] [Composition]

[0032] The composition according to the present invention comprises:

[0033] (a) at least one polylysine, and

[0034] (b) at least one coloring agent selected from dyes and pigments, where the Dyes are chosen from among oxidative dyes and direct dyes other than iridoid dyes,

[0035] wherein (a) polylysine has a weight average molecular weight in the range of 4,500 g / mol to 25,000 g / mol and is covalently bonded neither to the dyes nor to the polyorganosiloxane, and the composition has a pH value ranging from 8 to 12.

[0036] The composition according to the present invention is intended for coloring keratinous fibers. The term "keratinous fibers" means fibers of human or animal origin, such as hair, fur, eyelashes, eyebrows, wool, angora, cashmere, or fur. According to the present invention, the keratinous fibers are preferably human keratinous fibers, more preferably hair.

[0037] In particular, the composition according to the present invention is intended to color keratinous fibers with improved color intensity and color durability.

[0038] The composition according to the present invention has a pH ranging from 8 to 12, preferably from 8.5 to 12, and more preferably from 9 to 12, and even more preferably from 9 to 11. In another preferred embodiment, the composition according to the present invention has a pH value of 9.5 or more, for example, has a pH value of 9.5 to 12.

[0039] The composition according to the present invention comprises (a) at least one polylysine and

[0040] (b) at least one coloring agent selected from dyes and pigments, where the Dyes are chosen from among oxidative dyes and direct dyes other than iridoid dyes. Each of these components will be described in detail.

[0041] (Polylysine)

[0042] The composition according to the present invention comprises (a) at least one polylysine. Two or more types of polylysines may be used in combination. Thus, a single type of polylysine or a combination of different types of polylysines may be used.

[0043] Polylysines are formed by the condensation of several lysine amino acids. Polylysine can be a natural homopolymer of L-lysine, which can be produced by bacterial fermentation. Polylysines are typically used as a natural preservative in food products. Polylysine is a polyelectrolyte that is soluble in polar solvents such as water.

[0044] Polylysine can be, for example, epsilon-polylysine (or designated "e-polylysine"), which is a condensation of amino groups in the e position and carboxyl groups of lysines, or alpha-polylysine (or designated "a-polylysine"), which Polylysine is a condensation of amino groups in the α position and carboxyl groups of lysines. It is commercially available in various forms, such as poly-D-lysine and poly-L-lysine. Polylysine is generally a condensate of L-lysines, that is, poly-L-lysine.

[0045] Poly-lysine has a weight-average molecular weight in the range of 4,500 g / mol to 25,000 g / mol. Preferably, poly-lysine has a weight-average molecular weight in the range of 4,500 g / mol to 20,000 g / mol. The weight-average molecular weight in the sense of the present invention can be determined by general technology in the art, for example, gel permeation chromatography (GPC).

[0046] As an example of polylysine, we can cite:

[0047] - Epsilon-poly-L-lysine from JNC CORPORATION which is a 25% solution of Epsilon-poly-L-lysine having a weight average molecular weight of approximately 4,700 g / mol in aqueous solution;

[0048] - Epsilon-poly-L-lysine from TCR CANADA which is an Epsilon-poly-L-lysine having an average molecular weight by weight of approximately 18,000 g / mol.

[0049] According to a particular embodiment, the polylysine may be a modified polylysine, for example, a fatty chain polylysine as described in application FR 2889448, a guanidine or biguanidine function polylysine as described in application FR 2851465, a thiolated polylysine as described in application FR2853533.

[0050] Polylysine can be in the form of organic or inorganic salts. Salts added with an acid include, for example, salts of hydrochloric or hydrobromic acid, sulfuric acid, citric acid, succinic acid, tartaric acid, lactic acid, para-toluenesulfonic acid, phosphoric acid, and acetic acid; or salts of fatty acids, such as linoleic acid, oleic acid, palmitic acid, stearic acid, behenic acid, and 18-methylicosanoic acid. Salts added with a base include, for example, a sodium salt, a calcium salt, or a hydroxyalkylamine salt, such as N-methylglucamine, aminopropanediol, or triethanolamine.

[0051] In some preferred embodiments of the present invention, the polylysine of the present invention is present as a single molecule in the composition, or is not covalently bonded to other compounds. In one embodiment of the present invention, the polylysine is not covalently bonded to dye compounds. In another embodiment of the present invention, the polylysine is not covalently bonded to polyorganosiloxane compounds. The term "polyorganosiloxane" is well known in the art to designate compounds having a Si-O main chain and organic functional groups attached to the main channel.

[0052] In another embodiment of the present invention, the polylysine is in free form. The term "free form" here indicates that the polylysine is not covalently bonded to other compounds.

[0053] The polylysine(s) may be present in the composition according to the present invention in an amount equal to or greater than 0.05% by weight, preferably equal to or greater than 0.1% by weight, more preferably equal to or greater than 0.2% by weight, and even more preferably equal to or greater than 0.3% by weight; and / or may be equal to or less than 10% by weight, preferably equal to or less than 5% by weight, more preferably equal to or less than 3% by weight, and even more preferably equal to or less than 2% by weight, relative to the total weight of the composition.

[0054] The polylysine(s) may be present in the composition according to the present invention in an amount of 0.05% to 10% by weight, preferably 0.1% to 5% by weight, more preferably 0.2% to 3% by weight, and even more preferably 0.3% to 2% by weight, relative to the total weight of the composition.

[0055] (Coloring agent)

[0056] The composition according to the present invention comprises (b) at least one coloring agent. Two or more types of coloring agents may be used in combination. Thus, a single type of coloring agent or a combination of different types of coloring agents may be used.

[0057] The coloring agent of the present invention is chosen from dyes, pigments, and mixtures thereof.

[0058] -Dyeings

[0059] The dyes of the present invention are chosen from oxidative dyes and direct dyes other than iridoid dyes.

[0060] In one embodiment of the present invention, the composition comprises at least one oxidative dye and at least one direct dye in combination.

[0061] The dye of the present invention is not covalently bound to (a) polylysine. Therefore, the dye can be selected from oxidative dyes and direct dyes other than dyes covalently bound to polylysine. This may mean that the composition according to the present invention does not include dyes covalently bound to polylysine.

[0062] In another embodiment of the present invention, the dye is in free form. The term "free form" here indicates that the dye is not covalently bonded to any other compound.

[0063] The dye of the present invention is not an iridoid dye. Therefore, the dye is chosen from among oxidative dyes and direct dyes other than the Iridoid dyes. This may mean that the composition according to the present invention does not include any iridoid dyes.

[0064] Dyes are distinguished from "pigments" by the fact that dyes are soluble in the cosmetic medium whereas pigments are particles, which are not soluble in the cosmetic medium.

[0065] - Oxidative dye

[0066] Oxidative dyes can be chosen from oxidation bases and couplers.

[0067] The oxidation base can be chosen from those classically known in oxidation dyeing, preferably from the group consisting of ortho- and para-phenylenediamines, double bases, ortho- and para-aminophenols, heterocyclic bases, and their acid addition salts.

[0068] Examples include:

[0069] - (I) para-phenylenediamines of the following formula (I) and their addition salts with an acid: NHa

[0070] in which:

[0071] Ri represents a hydrogen atom, a Ci-C4 alkyl radical, a mo-nohydroxy(Ci-4 alkyl) radical, a polyhydroxy(C2-4 alkyl) radical, an alkoxy(CrC4)alkyl(Ci-4) radical, a Cr4 alkyl radical substituted with a nitrogen-containing group, a phenyl radical, or a 4'-aminophenyl radical;

[0072] R2 represents a hydrogen atom, a CrC4 alkyl radical, a mo-nohydroxy(CrC4 alkyl) radical, a polyhydroxy(C2-C4 alkyl) radical, an alkoxy(CrC4)alkyl(CrC4) radical, or a CrC4 alkyl radical substituted with a nitrogen-containing group;

[0073] Ri and R2 can also form with the nitrogen atom on which they are based a heterocycle containing nitrogen with 5 or 6 links optionally substituted by one or more alkyl, hydroxyl or ureido groups;

[0074] R 3 represents a hydrogen atom, a halogen atom such as a chlorine atom, a Ci-C4 alkyl radical, a sulfo radical, a carboxyl radical, a monohydroxy radical (Ci-C4 alkyl), a hydroxy radical (Ci-C4 alkoxy), an acetylamino radical (CrC4 alkoxy), a mesylamino radical (Cr4 alkoxy), or a car- radical bamoylamino (Cr4 alkoxy); And

[0075] R4 represents a hydrogen or halogen atom or a C1-C4 alkyl radical.

[0076] Among the nitrogen-containing groups of formula (I) above, particular examples include amino radicals, monoalkylamino(en CrC4), dialkylamino(en CrC4), tri-kylamino(en CiC4), monohydroxyalkylamino(en CrC4), di(monohydroxyalkyl(en Ci-C4))amino, imidazolinium, ammonium.

[0077] Among the para-phenylenediamines of formula (I) above, particular examples include para-phenylenediamine, para-tolylenediamine, 2-chloro-paraphenylenediamine, 2,3-dimethyl-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,5-dimethyl-para-phenylenediamine, N,N-dimethyl-para-phenylenediamine, N,N-diethyl-para-phenylenediamine, N,N-dipropyl-para-phenylenediamine, 4-amino-N,N-diethyl 1-3-methyl laniline, N,N-bis([3-hydroxyethyl)-para-phenylenediamine, 4-N,N-bis([3-hydroxyethyl)amino-2-methylaniline, 4-N,N-bis(P-hydroxyethyl)amino-2-chloroaniline, 2-[3-hydroxyethyl-para-phenylenediamine, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N-([3-hydroxypropyl)-para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N,N-dimethyl-3-methyl-para-phenylenediamine, N,N-(ethyl-[3-hydroxyethyl)-para-phenylenediamine, N-([3,Y-dihydroxypropyl)-para-phenylenediamine, N-(4'-aminophenyl)-para-phenylenediamine,N-phenyl-para-phenylenediamine, 2-[3-hydroxyethyloxy-para-phenylenediamine, 2-P-acetylamino-ethyloxy-para-phenylenediamine, N-(|3-methoxyethyl)-para-phenylenediamine, 2-methyl-|N-[3-hydroxyethyl-para-phenylenediamine, N-(4-aminophenyl)-3-hydroxy-pyrrolidine, 2-[{2-[(4-aminophenyl)amino]ethyl}(2-hydroxyethyl)amino]ethanol, and their salts of addition with an acid.

[0078] Among the para-phenylenediamines of formula (I) above, para-phenylenediamine, para-tolylenediamine, 2-isopropyl-para-phenylenediamine, 2-[3-hydroxyethyl-para-phenylenediamine, 2-[3-hydroxyethyloxy-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, N,N-bis([3-hydroxyethyl)-para-phenylenediamine, 2-chloro-para-phenylenediamine, and their addition salts with an acid are particularly preferred.

[0079] - (II) According to the present invention, "double bases" means compounds comprising at least two aromatic rings on which amino and / or hydroxyl groups are attached.

[0080] Among the double bases that can be used as oxidation bases in dye compositions according to the present invention, particular mention may be made of compounds corresponding to the following formula (II), as well as their salts of addition with an acid:

[0081] in which:

[0082] - Zi and Z2, which are identical or different, represent a hydroxyl radical or -NH 2 which can be substituted by a Ci-C4 alkyl radical or by a Y bonding arm;

[0083] - the Y-linking arm represents a linear or branched alkylene chain comprising of 1 to 14 carbon atoms, which may be interrupted or terminated by one or more nitrogen-containing groups and / or one or more heteroatoms such as oxygen, sulfur or nitrogen atoms, and optionally substituted by one or more hydroxyl or alkoxy radicals in Ci-CC6;

[0084] - R5 and R6 represent a hydrogen or halogen atom, an alkyl radical in Ci - C4, a monohydroxy radical (CrC4 alkyl), a polyhydroxy radical (C2-C4 alkyl), an amino radical (CrC4 alkyl), or a Y-linking arm;

[0085] - R7, R8, R9, Rio, Ri u and R12, which are identical or different, represent an atom of hydrogen, a Y-bonding arm, or an alkyl radical in CrC4; it being understood that compounds of formula (II) contain only one Y-bonding arm per molecule.

[0086] Among the nitrogen-containing groups of formula (II) above, particular examples include amino, mono(Ci-C4)alkylamino, dialkylamino(en CrC4), trial-kylamino(en CrC4), monohydroxyalkylamino(en CrC4), imidazolinium and ammonium radicals.

[0087] Among the double bases of formulas (II) above, particular mention may be made of N,N'-bis(P-hydroxyethyl)-N,N'-bis(4'-aminophenyl)-1,3-diaminopropanol, N,N'-bis(P-hydroxyethyl)-N,N'-bis(4'-aminophenyl)ethylenediamine, N,N'-bis(4-aminophenyl)-tetramethylenediamine, N,N'-bis(P-hydroxyethyl)-N,N'-bis(4-aminophenyl)tetramethylenediamine, N,N'-bis(4-methylaminophenyl)tetramethylenediamine, N,N'-bis(ethyl)-N,N'-bis(4'-amino-3'-methylphenyl)ethylenediamine, 1,8-bis(2,5-diaminophenoxy)-3,5-dioxaoctane, as well as their addition salts with a acid.

[0088] Among these double bases of formula (II), N,N'-bis(P-hydroxyethyl)-N,N'-bis(4'-aminophenyl)-l,3-diaminopropanol, l,8-bis(2,5-diaminophenoxy)-3,5-dioxaoctane, or one of their addition salts with an acid are particularly preferred.

[0089] - (III) Para-aminophenols corresponding to the following formula (III), as well as their addition salts with an acid: OH Ij cm NH, <

[0090] in which:

[0091] - Rb represents a hydrogen atom, a halogen atom such as fluorine, a radical alkyl in Ci-C4, monohydroxy(alkyl in C1-C4), alkoxy (in Ci-C4)alkyl(in Ci-C4), amino(alkyl in Ci-C4), or hydroxy(alkylamino in Ci-C4)alkyl (in Ci-C4),

[0092] - R[4 represents a hydrogen atom, a halogen atom such as fluorine, a radical alkyl in Ci-C4, monohydroxy(alkyl in Ci-C4), polydroxy(alkyl in Ci-C4), amino(alkyl in C1-C4), cyano(alkyl in C1-C4), or alkoxy(in Ci-C4)alkyl(in C1-C4),

[0093] Among the para-aminophenols of formula (III) above, particular mention may be made of para-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-hydroxymethylphenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2-([3-hydroxyethylaminomethyl)phenol, and their addition salts with an acid.

[0094] - (IV) Ortho-aminophenols usable as oxidation bases in the context of the present invention are chosen in particular from 2-aminophenol, 2-amino-l-hydroxy-5-methylbenzene, 2-amino-l-hydroxy-6-methylbenzene, 5-acetamido-2-aminophenol, and their salts of addition with an acid.

[0095] - (V) Among the heterocyclic bases usable as oxidation bases in the Dye compositions in accordance with the present invention, one can mention more particularly pyridine derivatives, pyrimidine derivatives, pyrazole derivatives, and their addition salts with an acid.

[0096] Among the pyridine derivatives, particular mention may be made of the compounds described, for example, in patents GB 1,026,978 and GB 1,153,196, such as 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3-aminopyridine, 2,3-diamino-6-methoxypyridine, 2-([3-methoxyethyl)amino-3-amino-6-methoxypyridine, 3,4-diaminopyridine, and their addition salts with an acid.

[0097] Among the pyrimidine derivatives, special mention may be made of the compounds described, for example, in patents DE 2 359 399; JP 88-169571; and JP 91-10659, or patent application WO 96 / 15765, such as 2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triaminopyrimidine, and pyrazolopyrimidine derivatives such as those mentioned in patent application FR-A-2 750 048 and among which may be mentioned pyrazolo[l,5-a]-pyrimidine-3,7-diamine; 2,5-dimethyl-pyrazolo[l,5-a]-pyrimidine-3,7-diamine; pyrazolo[1,5-a]pyrimidine-3,5-diamine; 2,7-dimethylpyrazolo[l,5-a]pyrimidine-3,5-diamine; 3-aminopyrazolo[l,5-a]pyrimidine-7-ol; 3-amino-pyrazolo[l,5-a]pyrimidine-5-ol;2-(3-aminopyrazolo-[l,5-a]pyrimidin-7-ylamino)ethanol, 2-(7-aminopyrazolo[l,5-a]pyrimidin-3-ylamino)ethanol, 2-[(3-aminopyrazolo[l,5-a]pyrimidin-7-yl)-(2-hydroxyethyl)amino]ethanol, 2-[(7-aminopyrazolo[l,5-a]-pyrimidin-3-yl)-(2-hydroxyethyl)amino]ethanol, 5,6-dimethylpyrazolo-[l,5-a]pyrimidine-3,7-diamine, 2,6-dimethylpyrazolo-[l,5-a]pyrimidine-3,7-diamine, 2,5,N7,N7-tetramethylpyrazolo[l,5-a]pyrimidine-3,7-diamine, 3-amino-5-methyl-7-imidazolylpropyl-aminopyrazolo[l,5-a]-pyrimidine, their addition salts and their tautomeric forms, when a tautomeric equilibrium exists, as well as their addition salts with an acid. ;

[0098] Among the pyrazole derivatives, particular mention may be made of the compounds described in patents DE 3 843 892 and DE 4 133 957 and patent applications WO 94 / 08969, WO 94 / 08970, FR-A-2 733 749, and DE 195 43 988 such as 4,5-diamino-l-methylpyrazole, 3,4-diaminopyrazole, 4,5-diamino-l-(4'-chlorobenzyl)-pyrazole, 4,5-diamino-l,3-dimethylpyrazole, 4,5-diamino-3-methyl-1-phenylpyrazole, 4,5-diamino-l-methyl-3-phenylpyrazole, 4-amino-1,3-dimethyl-5-hydrazinopyrazole, l-benzyl-4,5-diamino-3-methylpyrazole, 4,5-diamino-3-tert-butyl-l-methylpyrazole, 4,5-diamino-l-tert-butyl-3-methylpyrazole, 4,5-diamino-l-([3-hydroxyethyl)-3-methylpyrazole, 4,5-diamino-l-([3-hydroxyethyl)pyrazole, 4,5-diamino-l-ethyl-3-methylpyrazole, 4,5-diamino-l-ethyl-3-(4'-methoxyphenyl)pyrazole, 4,5-diamino-l-ethyl-3-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-l-methylpyrazole, 4,5-diamino-3-hydroxymethyl-l-isopropylpyrazole, 4,5-diamino-3-methyl-l-isopropylpyrazole, 4-amino-5-(2'-aminoethyl)amino-l,3-dimethylpyrazole, 3,4,5-triaminopyrazole, l-methyl-3,4,5-triamino-pyrazole, 3,5-diamino-l-methyl-4-methylaminopyrazole, 3,5-diamino-4-([3-hydroxy-ethyl)amino-l-methylpyrazole, as well as their addition salts with an acid.

[0099] Among the heterocyclic bases that can be used as oxidation bases, diaminopyrazolopyrazolones, and in particular 2,3-diamino-6,7-dihydro-1H5H-[pyrazolol,2,a]pyrazol-1-one and the addition salts of these diaminopyrazolones with an acid, can be mentioned in particular.

[0100] The coupler may be an oxidation coupler which may be chosen from those classically known in oxidation dyeing, preferably from the group consisting of meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthols, heterocyclic couplers and their addition salts with an acid.

[0101] Heterocyclic couplers can be selected from the group consisting of indole derivatives, indoline derivatives, sesamol and its derivatives, pyridine derivatives, pyrazolotriazole derivatives, pyrazolones, indazoles, benzimidazoles, benzothiazoles, benzoxazoles, 1,3-benzodioxoles, quinolines, and their addition salts with an acid.

[0102] These couplers are more specifically chosen from 2,4-Diamino-l-([3-hydroxyethyloxy)benzene, 2-methyl-5-aminophenol, 5-N-([3-hydroxyethyl)amino-2-methylphenol, 3-aminophenol, 2-chloro-3-amino-6-methylphenol, 1,3-dihydroxybenzene (or resorcinol), 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2-amino-4-([3-hydroxyethylamino)-l-methoxybenzene, 1,3-diaminobenzene, 2-methyl-5-hydroxyethylaminophenol, 4-amino-2-hydroxytoluene, 1,3-bis(2,4-diaminophenoxy)propane, sesamol, 2,4-diaminophenoxyethanol, l-amino-2-methoxy-4,5-methylenedioxybenzene, α-naphthol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 6-hydroxy-indoline, 2,6-dihydroxy-4-methylpyridine, 1H-3-methylpyrazol-5-one, 1-phenyl-3-methylpyrazol-5-one, 2-amino-3-hydroxypyridine, 3,6-dimethyl-pyrazolo[3,2-c]-1,2,4-triazole, 2,6-dimethylpyrazolo[1,5-b]-1,2,4-triazole, as well as their addition salts with an acid.

[0103] In general, the addition salts with an acid of oxidation bases and couplers are chosen in particular from hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates, acetates.

[0104] - Direct dyeing

[0105] A direct dye is a colored substance that does not require the use of a oxidizing agent to reveal its color.

[0106] By "direct dyeing" is meant natural and / or synthetic dyes, soluble in the cosmetic medium, other than oxidation dyes which absorb color in the visible spectrum, i.e. which appear visually colored; these are dyes which will diffuse superficially on the keratinous fibers.

[0107] Direct dyes can be chosen from natural direct dyes and synthetic direct dyes.

[0108] The expression "natural direct dye" means any dye or dye precursor of natural origin, produced by extraction (and optionally by purification) from a plant matrix or an animal such as an insect, optionally in the presence of natural compounds such as ash or ammonia.

[0109] Examples of natural direct dyes include quinone dyes (such as lawsone and juglone), alizarin, purpurin, laccaic acid, carminic acid, kermesic acid, purpurogallin, protocatechaldehyde, indigoids such as indigo, sorghum, isatin, betanin, curcuminoids (such as curcumin), spinulosin, various types of chlorophyll and chlorophyllin, hematoxylin, hematein, brazilein, brazilin, safflower dyes (such as carthamine), flavonoids (such as rutin, quercetin, catechin, epicatechin, morin, apigenidin, and sandalwood), and anthocyanins (such as apigeninidine and apigenin), carotenoids, tannins, orceins, sandalins and cochineal carmine.

[0110] It is also possible to use extracts or decoctions containing one or more natural direct tinctures, in particular extracts based on henna, turmeric longa extract, sorghum leaf sheath extract, haematoxylon campechianum extract, green tea extract, pine bark extract, cocoa extract, rosewood extract.

[0111] It is preferable that the natural direct tincture be chosen from the group consisting of curcuminoids, santalins, chlorophyllin, hematoxylin, hematein, brazilein, brazilin, sorghum, laccic acid, lawsone, juglone, alizarin, purpurin, carminic acid, kermesic acid, purpurogallin, protocatechaldehyde, indigoids, isatin, spinulosin, apigenin, orcein, betanin, flavonoids, anthocyanins, and extracts or decoctions containing these compounds.

[0112] Alternatively, natural direct dyes may preferably be chosen from, for example, hydroxylated quinones, indigoids, hydroxyflavones, santalins A and B, isatin and its derivatives, brasilin and its hydroxylated derivatives.

[0113] Hydroxylated quinones are preferably mono- or polyhydroxylated benzoquinones, naphthoquinones, and anthraquinones which are optionally substituted by groups such as alkyl, alkoxy, alkenyl, chloro, phenyl, hy- droxyalkyl and carboxyl.

[0114] The naphthoquinones are preferentially lawsone, juglone, flavioline, naph-tazarine, naphtopurpurine, lapachol, plumbagine, chloroplumbagine, droserone, shikonine, 2-hydroxy-3-methyl-l,4-naphthoquinone, 3,5-dihydroxy-l,4-naphthoquinone, 2,5-dihydroxy-1,4-naphthoquinone, 2-methoxy-5-hydroxy-1,4-naphtoquinone and 3-methoxy-5-hydroxy-1,4-naphtoquinone.

[0115] The benzoquinones are preferably spinulosin, atromentin, aurentioglyocladine, 2,5-dihydroxy-6-methylbenzoquinone, 2-hydroxy-3-methyl-6-methoxybenzoquinone, 2,5-dihydroxy-3,6-diphenylbenzoquinone, 2,3-dimethyl-5-hydroxy-6-methoxybenzoquinone and 2,5-dihydroxy-6-isopropylbenzoquinone.

[0116] The anthraquinones are preferably alizarin, quinizarin, purpurin, carminic acid, chrysophanol, kermesic acid, rhein, aloe emodin, pseudopurpurin, quinizarincarboxylic acid, frangula emodin, 2-methylquinizarin, 1-hydroxyanthraquinone and 2-hydroxyanthraquinone.

[0117] Indigos are preferably indigo, indirubin, isoindigo and Tyrian purple.

[0118] The hydroxyflavones are preferably quercetin and morin.

[0119] The term “synthetic direct dye” means any dye or dye precursor produced by chemical synthesis.

[0120] The direct dye can be chosen from the group consisting of acidic (anionic) direct dyes, basic (cationic) direct dyes and neutral (non-ionic) direct dyes.

[0121] Non-limiting examples of synthetic dyes include neutral (non-ionic), anionic (acidic) and cationic (basic) dyes such as direct azo, methanyl, carbonyl, azine, nitro(hetero)aryl or tri(hetero)arylmethane type dyes, porphyrins and phthalocyanines, alone or in mixtures.

[0122] More specifically, azo dyes comprise a -N=N- functional group in which the two nitrogen atoms are not simultaneously involved in a ring. However, it is not excluded that one of the two nitrogen atoms of the -N=N- sequence may be involved in a ring.

[0123] Dyes of the methine family are more particularly compounds comprising at least one sequence selected from >C=C< and -N=C<, where the two atoms are not simultaneously involved in a ring. However, it is specified that one of the nitrogen or carbon atoms of the sequences may be involved in a ring. More particularly, dyes of this family result from compounds of the following types: true methine (containing one or more of the sequences -C=C- (mentioned above); azomethine (containing at least one or more -C=N- sequences) with, for example, azacarbocyanines and their isomers, diazacarbocyanines and their isomers, tetraaza-carbocyanines; mono- and diarylmethane; indoamines (or diphenylamines); indophenols; indoanilines.

[0124] With regard to dyes of the carbonyl family, one may cite, for example, synthetic dyes chosen from among the dyes acridone, benz-zoquinone, anthraquinone, naphthoquinone, benzanthrone, anthranthrone, pyranthrone, pyrazolanthrone, pyrimidine-anthrone, flavanthrone, indanthrone, flavone, (iso)violanthrone, isoindolinone, benzimidazolone, iso-quinolinone, anthrapyridone, pyrazoloquinazoline, perinone, quinacridone, quinophthalone, naphthalimide, anthra-pyrimidine, diketopyrrolopyrrole or coumarin.

[0125] With regard to dyes of the cyclic azine family, particular examples include azine, xanthene, thioxanthene, fluorindine, acridine, (di)oxazine, (di)thiazine or pyronine dyes.

[0126] Nitro(hetero)aromatic tinctures are more particularly direct tinctures of nitrobenzene or nitropyridine.

[0127] With regard to porphyrin or phthalocyanine type dyes, cationic or non-cationic compounds may be used, optionally comprising one or more metals or metal ions, such as, for example, alkali and alkaline earth metals, zinc and silicon.

[0128] By way of examples of particularly suitable synthetic direct dyes, nitrobenzene dyes, azo direct dyes, azomethine or methine, azacarbocyanines, such as tetraazacarbocyanines (tetraazapentamethynes), quinone and in particular anthraquinone, naphthoquinone or benzoquinone direct dyes, or azine, xanthene, tria-rylmethane, indoamine, phthalocyanine and porphyrin direct dyes, alone or in mixtures, more preferably, these synthetic direct dyes are chosen from nitrobenzene dyes, azo direct dyes, azomethine or methine and tetraazacarbocyanines (tetraazapentamethynes); alone or in mixtures.

[0129] Among the direct azo dyes, azomethine, methine or tetraazapentamethyne that can be used according to the present invention, cite may be given the cationic dyes described in patent applications WO 95 / 15144, WO 95 / 01772 and EP 714 954; FR 2 189 006, FR 2 285 851, FR-2 140 205, EP 1 378 544 and EP 1 674 073.

[0130] Thus, we can cite in particular cationic direct dyes corresponding to the following formulas: A—D — D...... X l

[0131] in which:

[0132] D represents a nitrogen atom or the group -CH,

[0133] Ri and R2, which are identical or different, represent a hydrogen atom; a Ci-C4 alkyl radical that can be substituted by a -CN, -OH or -NH2 radical or can form, with a carbon atom of the benzene ring, a heterocycle optionally comprising oxygen or nitrogen that can be substituted by one or more Ci-C4 alkyl radicals; or a 4'-aminophenyl radical,

[0134] R3 and R'3, which are identical or different, represent a hydrogen atom, a halogen atom chosen from chlorine, bromine, iodine and fluorine, a cyano radical, an alkyl radical in CrC4, an alkoxy radical in Ci-C4, an acetyloxy radical,

[0135] X represents an anion, preferably chosen from chloride, methyl sulfate and acetate,

[0136] A represents a group chosen from among the following structures: F" 'bC M R r 4i * \ N+ K

[0137] in which R4 represents an alyl radical in CrC4 which can be substituted by a hydroxyl radical; Rs E — D, ““ Dj - -”4 , ft

[0138] in which:

[0139] R5 represents a hydrogen atom, a Ci-C4 alkoxy radical or a halogen atom, such as bromine, chlorine, iodine or fluorine,

[0140] R6 represents a hydrogen atom or an alkyl radical in Ci-C4 or forms with a carbon atom of the benzene ring, a heterocycle optionally comprising oxygen and / or optionally substituted by one or more alkyl groups in CrC4,

[0141] R7 represents a hydrogen atom or a halogen atom, such as bromine, chlorine, iodine or fluorine,

[0142] Di and D2, which are identical or different, represent a nitrogen atom or the -CH group,

[0143] m = 0oul,

[0144] X represents a cosmetically acceptable anion preferably chosen from chloride, methyl sulfate and acetate,

[0145] E represents a group chosen from the following structures: 1 R N* R

[0146] in which R' represents a Ci-C4 alkyl radical;

[0147] when m = 0 and when Di represents a nitrogen atom, then E can also designate a group of the following structure: ' R . f-- N I ' R

[0148] in which R' represents a Ci-C4 alkyl radical.

[0149] The following cationic direct dyes are also particularly suitable for the invention: CH., ^4 2...... [j N---------CH3 X' \^ / ch3 CH.t N / ;......CH„ f| z)—n = N—(ZY~~ N\ X ""N + \= / 'ch„ \ CHâ GH-ÿ f| %......W='H...........NH, Xh \ ch3 qh3 f_.-N / 7 XX 'X fl K / / \\ / / \\ v / -—N = N—CX—H--'■ NK LL ■' \ / HX / 2 "N+ x—' CH3 KO “N* V“G“NN—'7 X' 5 X / H j \ / < , h,c-nL Ac^-nn^ V-cck X-' 2 \ 7 H; \7" CHs

[0150] X represents a preferred union selected from chloride, iodide, methyl sulfate, ethyl sulfate, or acetate.

[0151] Examples of cationic direct dyes include 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, N,N'-bis-(2-hydroxyethyl)-2-nitro-p-phenylenediamine, 4-nitrophenylaminoethylurea, 2-amino-6-chloro-4-nitrophenol, 2,6-diamino-3-((pyridine-3-yl)-azo)pyridine.

[0152] The synthetic direct dye may be selected from fluorescent dyes. Two or more types of fluorescent dyes may be used in combination.

[0153] The fluorescent dyes according to the present invention contain one or more colored and fluorescent chromophores.

[0154] The use of certain fluorescent dyes can produce more visible colors on dark hair than with conventional hydrophilic or hydrophobic direct dyes. Furthermore, these fluorescent dyes, when applied to dark hair, can also lighten the hair without damaging it.

[0155] In this document, the term "fluorescent dyes" refers to fluorescent compounds and optical brighteners. In at least one embodiment, the fluorescent dye is soluble in the composition medium.

[0156] Fluorescent dyes are fluorescent compounds that absorb the visible radiation, for example wavelengths from 400 to 800 nm, which are capable of re-emitting light in the visible range at a longer wavelength.

[0157] According to one embodiment, the fluorescent tints useful for the present invention re-emit an orange fluorescent light. They have, for example, a maximum re-emission wavelength between 500 and 700 nm.

[0158] Non-limiting examples of fluorescent dyes include compounds known in the art, for example those described in Ullmann's Encyclopedia of Industrial Chemistry, Release 2004, 7th edition, chapter "Fluorescent Dyes".

[0159] The optical brighteners of this disclosure, also known as "brighteners", or "fluorescent brighteners", or "fluorescent brightening agents" or "FGA", or "fluorescent bleaching agents", or "bleachers", or "fluorescent bleachers", are colorless transparent compounds because they do not absorb in the visible light but only in the ultraviolet (wavelength ranges from 200 to 400 nanometers) and convert the absorbed energy into longer wavelength fluorescent light emitted in the visible part of the spectrum, usually in the blue and / or green, i.e. in wavelength ranges from 400 to 550 nanometers.

[0160] Optical brighteners are known in the art, they are for example described in Ullmann's Encyclopedia of Industrial Chemistry (2002), "Optical Brighteners" and in Kirk-Othmer's Encyclopedia of Chemical Technology (1995): "Fluorescent bleaching agents".

[0161] The fluorescent soluble compounds that may be cited include those belonging to the following families: naphthalimides, coumarins, xanthenes and in particular xanthenodiquinolizines and azaxanthenes; naphtholactams; azlactones; oxazines; thiazines; dioxazines; azo compounds; azomethines; methines; pyrazines; stilbenes; ketopyrroles; and pyrenes.

[0162] In terms of ionic nature, the direct dye can be chosen from the group consisting of acidic direct dyes, basic direct dyes, and neutral direct dyes, which covers all possible types of direct dyes, such as nitro dyes and the so-called HC dyes. Acidic direct dyes have an anionic fraction in their chemical structure. Basic direct dyes have a cationic fraction in their chemical structure. Neutral direct dyes are nonionic.

[0163] According to one embodiment, it is preferable that the direct dye comprise at least one acid direct dye.

[0164] Anionic direct dyes are commonly known as "acid direct dyes" because of their affinity with alkaline substances (see, for example, "In industrial Dyes, Chemistry, Properties, Application", Klaus Hunger Ed. Wiley-VCH Verlag GmbH & Co KGaA, Weinheim 2003). Anionic or acid dyes are known in the literature (see, for example, "Ullman's Encyclopedia of Industrial Chemistry", Azo Dyes, 2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 10.1002 / 14356007.a03 245, point 3.2; ibid, Textile Auxiliaries, 2002 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 10.1002 / 14356007.a26 227 and "Ashford's Dictionary of Industrial Chemicals", second edition, p.l4-p.39, 2001).

[0165] By "anionic direct dyes", we mean any direct dye comprising in its structure at least one sulfonate group SO3 and / or at least one carboxylate group C(O)O and / or at least one phosphonate group P(=O)OO and optionally one or more anionic groups G with G, which are identical or different, representing an anionic group selected from the alkoxide groups O, thioalkoxide S, phosphonate, carboxylate and thiocarboxylate: C(Q)Q' with Q and Q', which may be identical or different, representing an oxygen or sulfur atom; preferably, G represents a carboxylate, i.e. Q and Q' represent an oxygen atom.

[0166] Preferred anionic dyes of the formula of the present invention are chosen from among direct nitro acid dyes, acid azo dyes, acid azine dyes, acid triarylmethane dyes, acid indoamine dyes, acid anthraquinone dyes, anionic styryl dyes, indigoids and natural acid dyes; each of these dyes containing at least one sulfonate, phosphonate or carboxylate group bearing a cationic counterion X+, where X+ represents an organic or mineral cationic counterion chosen preferably from alkali and alkaline earth metals, such as Na+ and K+.

[0167] Preferred acid dyes may be chosen from:

[0168] a) anionic diaryl azo dyes of formula (II) or (II'):

[0169] formulas (II) and (II') in which: R7, Rs, R9, Rio, R'7, R's, R'9 and R'10, which may be identical or different, represent a hydrogen atom or a group chosen from: alkyl; alkoxy, alkylthio; hydroxyl, mercapto; nitro; R°-C(X)-X'-, R°-X'-C(X)-, R°-X'-C(X)-X”- with R° representing a hydrogen atom or an alkyl or aryl group; X, X' and X”, which may be identical or different, representing an oxygen or sulfur atom, or NR with R representing a hydrogen atom or an alkyl group; (O)2S(O )-, X+ as defined previously; (O)CO -, X+ as defined previously; (O)P(O2 )-, 2X+ as defined previously; R”-S(O)2-, with R” representing a hydrogen atom or an alkyl, aryl, (di)(alkyl)amino or aryl(alkyl)amino group; preferably a phenylamino or phenyl group; R”'-S(O)2-X'- with R'” representing an optionally substituted alkyl or aryl group, X' as defined previously; (di)(alkyl)amino; aryl(alkyl)amino optionally substituted with one or more groups selected from i) nitro; ii) nitroso; iii) (O)2S(O)-, X+ and iv) alkoxy with X+; heteroaryl optionally substituted; preferably a benzo-thiazolyl group; cycloalkyl; in particular cyclohexyl, Ar-N=N- with Ar representing an optionally substituted aryl group, preferably a phenyl optionally substituted by one or more alkyl groups, (O)2S(O )-, X+ or phenylamino; or alternatively two contiguous groups R7 with R8 or R8 with R9 or R9 with R10 jointly form A' with a fused benzo group; and R'7 with R'8 or R'8 with R'9 or R'9 with R'10 jointly form B' with a fused benzo group; A' and B' being optionally substituted by one or more groups chosen from i) nitro; ii) nitroso; iii) (O)2S(O)-, X+; iv) hydroxyl; v) mercapto; vi) (di)(alkyl)amino; vii) R°-C(X)-X'-; viii) R°-X'-C(X)-; ix) R°-X'-C(X)-X"-; x) Ar-N=N- and xi) an optionally substituted aryl(alkyl)amino group; with X+, R°, X, X', X" and Ar as defined above; W represents a sigma bond, an oxygen or sulfur atom, or a divalent radical i) -NR- with R as defined previously, or ii) methylene -C(Ra)(Rb)- with Ra and Rb, which may be identical or different, representing a hydrogen atom or an aryl group, or Ra and Rb together with the carbon atom that bears them, form a spiro cycloalkyl; preferably W represents a sulfur atom or Ra and Rb together form a cyclohexyl;

[0170] it being understood that formulas (II) and (II1) comprise at least one sulfonate radical (O)2S(O )-, X+ or phosphonate radical (O)P(O2 ) 2X+ or carboxylate radical (O)C(O )-, X+ on one of the rings A, A', B, B' or C with X+ as defined above;

[0171] Comme exemples de teintures de formule (II), on peut citer Acid Red 1, Acid Red 4, Acid Red 13, Acid Red 14, Acid Red 18, Acid Red 27, Acid Red 32, Acid Red 33, Acid Red 35, Acid Red 37, Acid Red 40, Acid Red 41, Acid Red 42, Acid Red 44, Acid Red 68, Acid Red 73, Acid Red 135, Acid Red 138, Acid Red 184, Food Red 1, Food Red 13, Food Red 17, Acid Orange 6, Acid Orange 7, Acid Orange 10, Acid Orange 19, Acid Orange 20, Acid Orange 24, Acid Yellow 9, Acid Yellow 36, Acid Yellow 199, Food Yellow 3 ; Acid Violet 7, Acid Violet 14, Acid Blue 113, Acid Blue 117, Acid Black 1, Acid Brown 4, Acid Brown 20, Acid Black 26, Acid Black 52, Food Black 1, Food Black 2, Pigment Red 57 ;

[0172] et à titre d’exemples de teintures de formule (II’), on peut citer Acid Red 111, Acid Red 134, et Acid Yellow 38 ;

[0173] b) les teintures anthraquinone de formules (III) et (III’) :

[0174] formules (III) et (III’) dans lesquelles : • R22, R23, R24, R25, R26 and R27, which may be identical or different, re feature a hydrogen or halogen atom or a group chosen from: • alkyl; • hydroxyl, mercapto; • alkoxy, alkylthio; • aryloxy or arylthio optionally substituted, preferably substituted by a or several groups chosen from alkyl and (O)2S(O )-, X+ with X+ as defined previously; • aryl(alkyl)amino optionally substituted by one or more chosen groups among alkyl and (O)2S(O )-, X+ with X+ as defined previously; • (di)(alkyl)amino; • (di)(hydroxyalkyl)amino; • (O)2S(O )-, X+ with X+ as defined previously; • Z' represents a hydrogen atom or an NR28R29 group with R28 and R29, which may be identical or different, representing a hydrogen atom or a group chosen from: • alkyl; • polyhydroxy alkyl such as hydroxyethyl; • aryl optionally substituted by one or more groups, including i) alkyl such as methyl, n-dodecyl, n-butyl; ii) (O)2S(O )-, X+ with X+ as defined above; iii) R°-C(X)-X'-, R°-X'-C(X)-, R°-X'-C(X)-X"- with R°, X, X' and X" as defined above, preferably R° represents an alkyl group; • cycloalkyl; in particular cyclohexyl; • Z represents a group chosen from hydroxyl and NR'28R'29 with R'28 and R'29, which may be identical or different, representing the same atoms or groups as R28 and R29 as defined previously;

[0175] it being understood that formulas (III) and (III1) comprise at least one sulfonate group (O)2S(O )-, X+ with X+ as defined above;

[0176] Examples of formula (III) tinctures include Acid Blue 25, Acid Blue 43, Acid Blue 62, Acid Blue 78, Acid Blue 129, Acid Blue 138, Acid Blue 140, Acid Blue 251, HC Blue 16, which is a cationic anthraquinone tincture, Acid Green 25, Acid Green 41, Acid Violet 42, Acid Violet 43, Mordant Red 3; and Violet EXT 2,

[0177] and as examples of formula shades (III'), Acid Black 48 can be cited;

[0178] and

[0179] c) quinoline-based tinctures of formula (IV):

[0180] in which formula (IV): • R6i represents a hydrogen or halogen atom or an alkyl group; • R62, R63 and Rm, which may be identical or different, represent an atom of hydrogen or a group (O)2S(O )-, X+ with X+ as defined previously; • or in variant R6[ with R62, or R6[ with R64, together form a benzo group optionally substituted by one or more (O)2S(O )-, X+ groups with X+ as defined previously; • G represents an oxygen or sulfur atom or an NRe group with Re representing a hydrogen atom or an alkyl group; in particular G represents an oxygen atom;

[0181] it being understood that formula (IV) comprises at least one sulfonate group (O)2S(O )-, X+ with X+ as defined above;

[0182] Examples of formula (IV) tinctures include Acid Yellow 2, Acid Yellow 3 and Acid Yellow 5:

[0183] d) triarylmethane dyes of formula (Va) or (V'a)

[0184] The triarylmethane direct dye(s) according to the present invention are cationic dyes of formulas (Va) and (V'a) below:

[0185] as well as their organic or mineral acid or base addition salts, their geometric isomers, their optical isomers and their tautomers, their mesomeric forms, their solvates such as hydrates:

[0186] in which formulas (Va) and (V'a) are given below:

[0187] Rb R2, R3 and R4, which may be identical or different, represent a hydrogen atom or one of the following groups: alkyl (in Ci-C6) optionally substituted, preferably by a hydroxyl group; aryl such as phenyl, arylalkyl (in CrC4) such as benzyl, heteroaryl, heteroarylalkyl (in CrC4), or two groups RB and R2, and / or R3 and R4 borne by the same nitrogen atom, together with the nitrogen atom which bears them, form a heterocycloalkyl group optionally substituted such as morpholino, piperazino or piperidino, preferably Rh R2, R3 and R4, which may be identical or different, represent a hydrogen atom or an alkyl group (in CrC4);

[0188] R5, R6, R7, Rs, R9, Rio, Ru, R12, R13, R14, R15, and Ri6, which may be identical or different, represent a hydrogen or halogen atom, or a group selected from i) hydroxyl, ii) thiol, iii) amino iv) (di)(alkyl)(en Ci-C4)amino, v) (di)arylamino such as (di)phenylamino, vi) nitro, vii) acylamino (-NR-C(O)R') in which the radical R is a hydrogen atom, a C1-C4 alkyl radical optionally bearing at least one hydroxyl group and the radical R' is a Ci-C2 alkyl radical; viii) carbamoyl ((R)2N-C(O)-) in which the radicals R, which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl radical optionally bearing at least one hydroxyl group; ix) carboxylic acid or ester, (-OC(O)R') or (-C(O)OR'), in which the radical R' is a hydrogen atom or a C1-C4 alkyl radical optionally bearing at least one hydroxyl group and the radical R' is a CrC2 alkyl radical; x) alkyl optionally substituted, in particular by a hydroxyl group;xi) alkylsulfonylamino (R'SO2-NR-) in which the radical R represents a hydrogen atom or a C1-C4 alkyl radical bearing facul; optionally at least one hydroxyl group and the R' radical represents a C1-C4 alkyl radical, a phenyl radical; xii) aminosulfonyl ((R)2N-SO2-) in which the R radicals, which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl radical optionally bearing at least one hydroxyl group; xiii) alkoxy (in CrC4); and xiv) alkylthio (in CrC4);

[0189] or two radicals carried by two contiguous carbon atoms R5 and R6 and / or R7 and R8 and / or R9 and R10 and / or Rn and Rn and / or Rn and RM and / or R[5 and R[6 form together with the carbon atoms which carry them, a condensed ring with 6 links, aryl or heteroaryl, preferably benzo, this ring being optionally substituted, preferably an unsubstituted benzo ring;

[0190] Q represents an anionic counter-ion as defined above, to obtain the electronic neutrality of the molecule, preferably chosen from halides such as chloride or bromide, and phosphate;

[0191] when the cationic dye comprises one or more anionic substituents such as COOR or SO3R, R representing a hydrogen atom or a cation, it is understood that there are then more cationic substituents than anionic substituents, so that the overall resulting charge of the triarylmethane structure is cationic, counterbalanced by Q.

[0192] more preferably, the direct dye(s) a) of the present invention are chosen from formulas (Va) and (V'a) such as HC Blue 15, which is a neutral triarylmethane direct dye, CHj CH, OH 1 O = P-OH 1

[0193] According to a preferred embodiment, the direct dye(s) a) is / are selected from triarylmethane dyes of formula (Va) or (V'a), in which, taken alone or separately,

[0194] Rb R2, R3 and R4 represent a hydrogen atom or an alkyl group (in CrC4) such as methyl or ethyl;

[0195] R5, R6, R7, R8, R9, Rio, Rn, Ri2, Ri3, Ru, R15, and R6 represent an atom hydrogen, a halogen atom, such as chlorine, or an alkyl group (CrC4) such as methyl or ethyl, an amino group, a (di)(alkyl)(Ci-C4)amino group, and, pre Referentially, at least one of the groups R9, R10, Ru or Rn represents a hydrogen atom, a halogen atom (Cl), or an amino group, or an (alkyl)(C1-C4)amino or (di)(alkyl)(C1-C4)ammo group, preferably in a para position relative to the phenyl group.

[0196] Preferably, the direct dye(s) of triaylmethane structure are chosen from Basic Violet 1, Basic Violet 2, Basic Violet 3, Basic Violet 4, Basic Violet 14, Basic Blue 1, Basic Blue 7, Basic Blue 26, Basic Green 1, Basic Blue 77 (also called HC Blue 15), and their mixtures.

[0197] It is preferable that the acid direct dye be chosen from the group consisting of Yellow 5, Orange 4, EXT. Violet 2, Acid Black 1 and Acid Violet 43 (CI 60730).

[0198] According to one embodiment, it is preferable that the direct dye comprise at least one basic direct dye.

[0199] Basic direct dyes, which may be used in the present invention, may include, but are not limited to, Basic Blue 3, Basic Blue 6, Basic Blue 7, Basic Blue 9, Basic Blue 26, Basic Blue 41, Basic Blue 99, Basic Brown 4, Basic Brown 16, Basic Brown 17, Basic Green 1, Basic Green 4, Basic Orange 1, Basic Orange 2, Basic Red 1, Basic Red 2, Basic Red 22, Basic Red 46, Basic Red 76, Basic Red 118, Basic Violet 1, Basic Violet 3, Basic Violet 4, Basic Violet 10, Basic Violet 11, Basic Violet 14, Basic Violet 16, Basic Yellow 11, Basic Yellow 28, and Basic Yellow 57.

[0200] According to one embodiment, it is preferable that the direct dye comprise at least one neutral (non-ionic) direct dye.

[0201] Neutral (non-ionic) direct dyes, which may be used in the present invention, may include, but are not limited to, nitro dyes, such as 4-amino-3-nitrophenol, 2-amino-5-nitrophenol, 2-nitro-5-glycerylmethylaniline, 3-methylamino-4-nitrophenoxyethanol, 4-hydroxypropylamino-3-nitrophenol, HC dyes such as HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 9, Yellow 10, HC Red 1, HC Red 3, HC Red 7, HC Red 10, HC Red 7, HC Red 11, HC Blue 2, HC Blue 12, HC Blue 14, HC Orange 1, HC Orange 2, HC Violet 1, HC Violet 2, and disperse dyes.

[0202] Disperse Black 9, Disperse Blue 1, Disperse Blue 3, Disperse Blue 7, Disperse Brown 4, Disperse Orange 3, Disperse Red 11, Disperse Red 15, Disperse Red 17, Disperse Violet 1, Disperse Violet 4 and Disperse Violet 15.

[0203] In a preferred embodiment of the present invention, the direct dye is chosen from among neutral synthetic direct dyes such as neutral anthraquinone, nitropyridine, azo, xanthene, acridine, azine or tria-rylmethane direct dyes.

[0204] • Pigments

[0205] In one embodiment, the coloring agent can be chosen from pigments.

[0206] By "pigments" we mean white or colored particles, inorganic or organic, of any shape, insoluble, intended to color or dye keratinous fibers.

[0207] Pigments can be white or colored, inorganic and / or organic.

[0208] Among the usable inorganic pigments, the following may be mentioned without limitation: titanium dioxide, optionally surface-treated; zirconium or cerium oxide; zinc, iron, or chromium oxide (black, yellow, or red); manganese violet; ultramarine blue; chromium hydrate; and ferric blue; or metallic powders, such as aluminum or copper powder. The pigments may also be selected from nanopigments formed of metallic oxides, such as titanium dioxide, zinc oxide, iron oxide, zirconium oxide, and cerium oxide, and mixtures thereof. "Nanopigments" means pigments with an average particle size range of 1 nm to 500 nm, such as, for example, particle sizes between 10 nm and 100 nm.

[0209] Among the usable organic pigments, mention may be made, without limitation, of carbon black, D&C type pigments and lakes, such as lakes based on cochineal carmine and barium, strontium, calcium or aluminum. For example, Red 33 (5-amino-4-hydroxy-3-(phenylazo)-naphthalene-2,7-disodium disulfonate) and Red 202 (calcium bis[2-(3-carboxy-2-hydroxynephthylazo)-5-methylbenzenesulfonate) can be used as a D&C type pigment.

[0210] The organic pigment may also be a diketopyrrolopyrrole (DPP) such as those described in documents EP-A-542669, EP-A-787730, EP-A-787731 and WO-A-96 / 08537.

[0211] The organic pigment can be chosen from bio-pigments such as Bio-ChromaDerm® or BioChromaEyes® supplied by Biotic Phocea in France.

[0212] Preferably, the pigment can be selected from metallic oxides such as titanium dioxide, zirconium oxide, cerium oxide, zinc oxide, iron oxide and chromium oxide; manganese violet; Prussian blue; ultramarine blue; chromium hydrate; ferric blue; aluminum powder; copper powder; carbon black; D&C type pigments; lakes; pearlescent pigments; and mixtures thereof.

[0213] By “pearl pigments” means iridescent particles of any shape, such as particles produced by certain shellfish in their shells or synthesized.

[0214] Pearlescent agents may be selected from white pearlescent agents, such as mica coated with titanium dioxide or bismuth oxychloride, colored pearlescent agents, such as mica coated with iron oxide, mica coated with ferric blue or chromium oxide, mica coated with titanium oxide and an organic pigment of the aforementioned type, and bismuth oxychloride-based pearlescent agents.

[0215] The colouring agent(s) may be present in the composition according to the present invention in an amount equal to or greater than 0.005% by weight, preferably equal to or greater than 0.01% by weight, more preferably equal to or greater than 0.05% by weight, and even more preferably equal to or greater than 0.08% by weight; and / or may be equal to or less than 15% by weight, preferably equal to or less than 10% by weight, more preferably equal to or less than 5% by weight, and even more preferably equal to or less than 3% by weight, relative to the total weight of the composition.

[0216] The colouring agent(s) may be present in the composition according to the present invention in an amount of 0.005% to 15% by weight, preferably 0.01% to 10% by weight, more preferably 0.05% to 5% by weight, and even more preferably 0.08% to 3% by weight, relative to the total weight of the composition.

[0217] (Alkaline agent)

[0218] In one embodiment of the present invention, the composition comprises at least one additional alkali agent in addition to (a) polylysine. Two or more types of alkali agents may be used in combination. Thus, a single type of alkali agent or a combination of different types of alkali agents may be used.

[0219] The alkali agent may be an inorganic alkali agent. It is possible that the inorganic alkali agent may be selected from the group consisting of ammonia, ammonium salts, alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal phosphates and monohydrogen phosphates such as sodium phosphate or sodium monohydrogen phosphate.

[0220] Examples of inorganic alkali metal hydroxides include sodium hydroxide and potassium hydroxide. Examples of alkaline earth metal hydroxides include calcium hydroxide and magnesium hydroxide.

[0221] The ammonium salt may be an organic ammonium salt or an inorganic ammonium salt. The organic ammonium salt may be selected from, for example, ammonium salts containing trimethylamine, triethylamine, tributylamine, monoethanolamine, diethanolamine, triethanolamine, lysine, arginine; and ammonium formate, ammonium acetate, and alkylammonium hydroxides such as tetramethylammonium hydroxide, and mixtures thereof. The inorganic ammonium salt may be selected from, for example, ammonium carbonate, ammonium hydroxide, ammonium bicarbonate, ammonium chloride, ammonium nitrate, ammonium sulfate, and ammonium phosphate, and mixtures thereof.

[0222] The alkali agent may be an organic alkali agent. It is preferable that the agent organic alkali be chosen from the group consisting of monoamines and their derivatives; diamines and their derivatives; polyamines and their derivatives; basic amino acids and their derivatives; oligomers of basic amino acids and their derivatives; polymers of basic amino acids and their derivatives; urea and its derivatives; and guanidine and its derivatives.

[0223] Examples of organic alkali metals include alkanolamines such as mono-, di- and tri-ethanolamine, and isopropanolamine; urea, guanidine and their derivatives; basic amino acids such as lysine, ornithine or arginine; and diamines such as those described in the structure below:

[0224] in which R denotes an alkylene such as propylene optionally substituted with a hydroxyl or a Ci-C4 alkyl radical, and Rh R2, R3 and R4 independently denote a hydrogen atom, an alkyl radical or a CrC4 hydroxyalkyl radical, such as may be exemplified by 1,3-propanediamine and its derivatives. Arginine, urea and monoethanolamine are preferred.

[0225] The alkaline agent can be included so that the pH of the reducing composition can be between 8 and 12, preferably between 8.5 and 12, and more preferably between 9 and 12.

[0226] In one embodiment (i) of the present invention, when the composition comprises (b) at least one coloring agent selected from oxidative dyes, the composition comprises at least one additional alkaline agent.

[0227] In embodiment (i) of the present invention, the additional alkaline agent may be present in the composition in an amount of 1% by weight or more, preferably 2% by weight or more, more preferably 3% by weight or more, and even more preferably 4% by weight or more; and / or may be 20% by weight or less, preferably 15% by weight or less, more preferably 10% by weight or less, and even more preferably 8% by weight or less, relative to the total weight of the composition.

[0228] In embodiment (i) of the present invention, the additional alkaline agent may be present in the composition in an amount of 1 to 20% by weight, preferably 2 to 15% by weight, more preferably 3 to 10% by weight, and even more preferably 4 to 8% by weight, relative to the total weight of the composition.

[0229] In another embodiment (ii) of the present invention, when the composition comprises the (b) coloring agent selected from direct dyes, the composition comprises at least one additional alkaline agent in an amount of less than 1% by weight, preferably less than 0.5% by weight, more preferably less than 0.1% by weight, and even more preferably less than 0.05% by weight, relative to the total weight of the composition.

[0230] In embodiment (ii), the composition according to the present invention may be free from any alkaline agent.

[0231] (Other ingredients)

[0232] The composition of the present invention may also include one or more additional ingredients as follows.

[0233] - Cationic polymer

[0234] The composition according to the present invention may comprise at least one cationic polymer. Only one type of cationic polymer may be used, but two or more different types of cationic polymers may be used in combination.

[0235] It should be noted that, for the purposes of the present invention, the term "cationic polymer" means any polymer containing cationic groups and / or groups that can be ionized into cationic groups.

[0236] A particular type of cationic polymer is not limited as long as the effect of the present invention is obtained. Since the effect of the present invention can be produced from the combination of (a) polylysine and (b) the coloring agent of the present invention, any type of cationic polymer can be used.

[0237] Such polymers can be chosen from those already known in themselves to improve the cosmetic properties of hair, that is to say in particular those described in patent application EP-A-337 354 and in French patents FR-2 270 846, 2 383 660, 2 598 611, 2 470 596 and 2 519 863.

[0238] Preferred cationic polymers are chosen from those containing motifs comprising primary, secondary, tertiary and / or quaternary amine groups, which may either be part of the main chain of the polymer or be carried by a directly attached side substituent.

[0239] The cationic polymers used generally have a number-average molecular mass between approximately 500 and approximately 5x106 and preferably between approximately 103 and approximately 3x106.

[0240] Among the cationic polymers that can be cited, we have more particularly the polyamine, polyamino amide and quaternary polyammonium type polymers.

[0241] These products are known. They are described in particular in French patents 2,505,348 and 2,542,997. Among the said polymers, the following can be cited.

[0242] (1) Homopolymers or copolymers derived from acrylic esters or amides or methacrylics and comprising at least one of the following formula motifs (I), (II), (III) or (IV):

[0243] in which

[0244] R3, which may be identical or different, designates a hydrogen atom or a radical CH3;

[0245] A, which may be identical or different, represent a linear or branched alkyl group of 1 to 6 carbon atoms, preferably 2 or 3 carbon atoms, or a hydroxyalkyl group of 1 to 4 carbon atoms;

[0246] R4, R5 and R6, which may be identical or different, represent a group alkyl containing from 1 to 18 carbon atoms or a benzyl radical and preferably an alkyl group containing from 1 to 6 carbon atoms;

[0247] Ri and R2, which may be identical or different, represent a hydrogen or an alkyl group containing from 1 to 6 carbon atoms, and preferably methyl or ethyl; and

[0248] X designates an anion derived from a mineral or organic acid, such as a methosulfate anion or a halide such as chloride or bromide.

[0249] The polymers of family (1) may also contain one or more motifs derived from comonomers which may be selected from the family of acrylamides, methacrylamides, diacetone acrylamides, acrylamides and methacrylamides substituted on the nitrogen by lower alkyls (C1-C4), acrylic or methacrylic acids or their esters, vinyllactams such as vinylpyrrolidone or vinyl-caprolactam, and vinyl esters.

[0250] Thus, among these polymers of family (1), we can mention:

[0251] - acrylamide and dimethylaminoethyl methacrylate copolymers quantified by dimethyl sulfate or by a dimethyl halide, such as the product sold under the name Hercofloc by the company Hercules,

[0252] - acrylamide and methacryloyloxyethyltrimethyl chloride copolymers ammonium described, for example, in patent application EP-A-080 976 and sold under the name Bina Quat P 100 by BASF,

[0253] - acrylamide and methacryloyloxyethyltrimethyl- methosulfate copolymers Ammonium sold under the name Reten by the company Hercules,

[0254] - vinylpyrrolidone / acrylate or dialkylaminoalkyl methacrylate copolymers whether quantified or not, such as the products sold under the name "Gafquat" by the company ISP, for example "Gafquat 734" or "Gafquat 755", or the products known as "Copolymer 845, 958 and 937". These polymers are described in detail in French patents 2,077,143 and 2,393,573.

[0255] - dimethylaminoethyl / vinylca- methacrylate terpolymers prolactam / vinylpyrrolidone, such as the product sold under the name Gaffix VC 713 by the company ISP, and

[0256] - vinylpyrrolidone / methacrylamidopropyldimethylamine copolymers sold in in particular under the name Styleze CC 10 by the company ISP, and quaternized vinylpyr-rolidone / dimethylaminopropyl methacrylamide copolymers such as the product sold under the name "Gafquat HS 100" by the company ISP.

[0257] (2) Cellulose ether derivatives comprising quaternary ammonium groups, described in French patent 1,492,597, and in particular the polymers sold under the names "JR" (JR 400, JR 125, JR 30M) or "LR" (LR 400, LR 30M) by the company Amerchol. These polymers are also defined in the CTFA dictionary as quaternary ammonium compounds of hydroxyethylcellulose that have reacted with an epoxide substituted with a trimethylammonium group.

[0258] (3) Cationic cellulose derivatives such as cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer, described in particular in US patent 4,131,576, such as hydroxyalkyl-celluloses, for example hydroxymethyl-, hydroxyethyl- or hydroxypropyl-celluloses grafted in particular with a salt of methacryloylethyltrimethylammonium, methacrylamidopropyltrimethylammonium or dimethyldiallylammonium.

[0259] The commercial products corresponding to this definition are more particularly the products sold under the name Celquat L 200 and Celquat H 100 by the company Akzo Nobel.

[0260] (4) Cationic guar gums described more particularly in the patents US 3,589,578 and 4,031,307, such as guar gums containing trialkylammonium cationic groups. For example, guar gums modified with a salt (e.g., chloride) of 2,3-epoxypropyltrimethylammonium are used. Examples include guar hydroxypropyltrimonium chloride and guar hydroxypropyltrimonium chloride, such as those sold under various names Jaguar C13S, Jaguar C14S, Jaguar C17 and Jaguar C162 commercial vehicles by the Solvay company.

[0261] (5) Polymers consisting of piperazinyl motifs and alkylene or hy- radicals Divalent droxyalkylene polymers with straight or branched chains, optionally interrupted by oxygen, sulfur, or nitrogen atoms or by aromatic or heterocyclic rings, as well as the oxidation and / or quaternization products of these polymers. Such polymers are described, in particular, in French patents 2,162,025 and 2,280,361.

[0262] (6) Water-soluble polyaminoamides prepared in particular by polycon densification of an acidic compound with a polyamine; these polyaminoamides may be crosslinked with an epihalohydrin, a diepoxide, a dianhydride, an unsaturated dianhydride, a bis-unsaturated derivative, a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide or alternatively with an oligomer resulting from the reaction of a difunctional compound that is reactive with a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide, an epihalohydrin, a diepoxide or a bis-unsaturated derivative; the crosslinking agent being used in ranges from 0.025 to 0.35 mol per amine group of the polyaminoamide; these polyaminoamides may be alkylated or, if they contain one or more tertiary amine functions, they may be quatemized. Such polymers are described, in particular, in French patents 2,252,840 and 2,368,508.

[0263] (7) Alkyldiallylamine or dialkyldiallylammonium cyclopolymers, such as homopolymers or copolymers containing, as the main constituent of the chain, motifs conforming to formula (V) or (VI): ----rCH, ' ' f " L R / " X (CH2)k -(CH2)t-—— ÇR9 XÇ(R9)-CH2-H2C^ / ch2 (VI)?

[0264] formulas in which

[0265] k and t are equal to 0 or 1, the sum k + t being equal to 1; R9 designates a hydrogen atom or a methyl radical; R7 and R8, independently of each other, designate an alkyl group comprising from 1 to 6 carbon atoms, a hy- group droxyalkyl in which the alkyl group preferentially comprises 1 to 5 carbon atoms, a lower amidoalkyl group (CrC4), or R7 and R8 may designate, together with the nitrogen atom to which they are attached, heterocyclic groups such as piperidyl or morpholinyl; R7 and R8, independently of each other, preferentially designate an alkyl group comprising 1 to 4 carbon atoms; and Y is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfite, sulfate, or phosphate. These polymers are described in particular in French patent 2,080,759 and its certificate of addition 2,190,406.

[0266] Among the polymers defined above, special mention may be made of the dimethyldiallyl-ammonium chloride homopolymer sold under the name "Merquat 100" by the company Nalco (and its low weight average molecular mass homologues) and the copolymers of diallyldimethylammonium chloride and acrylamide, sold under the name "Merquat 550".

[0267] (8) The quaternary diammonium polymer containing repeating units responding to the formula: R? N+_b (vil) II R^ X R13 X

[0268] in which formula (VII):

[0269] Rio, Ru, Rn and Rn, which may be identical or different, represent aliphatic, alicyclic or arylaliphatic radicals containing from 1 to 20 carbon atoms or lower hydroxyalkylaliphatic radicals, or alternatively R10, Ru, R12 and Rn, together or separately, constitute, with the nitrogen atoms to which they are attached, heterocycles optionally containing a second heteroatom other than nitrogen, or alternatively R10, Ru, R[2 and Rn represent a linear or branched Ci-C6 alkyl radical substituted by a nitrile, ester, acyl or amide group or a -CO-O-Ru-D or -CO-NH-R14- group where R[4 is an alkylene and D is a quaternary ammonium group;

[0270] Ai and B i represent polymethylene groups containing from 2 to 20 carbon atoms, which may be linear or branched, saturated or unsaturated, and which may contain, bonded to or intercalated in the main chain, one or more aromatic rings or one or more oxygen or sulfur atoms or sulfoxide, sulfone, disulfide, amino, alkylamino, hydroxyl, quaternary ammonium, ureido, amide or ester groups, and

[0271] X denotes an anion derived from an inorganic or organic acid;

[0272] Ai, Rio and R[2] can form, with the two nitrogen atoms to which they are attached, a piperazine ring; furthermore, if Ai represents an alkylene or hydroxyalkylene radical, linear or branched, saturated or unsaturated, Bi can also represent the group -(CH2)n -CO-D-OC-(CH2)n- in which D denotes:

[0273] i) a glycol residue of formula: -OZO-, where Z represents a linear or branched hydrocarbon radical or a group corresponding to one of the following formulas:

[0274] -(CH2-CH2-O)x-CH2-CH2-; And

[0275] -[CH2-CH(CH3)-O]y-CH2-CH(CH3)-

[0276] where x and y denote an integer from 1 to 4, representing a defined and unique degree of polymerization or any number from 1 to 4 representing an average degree of polymerization;

[0277] ii) a bis-secondary diamine residue such as a piperazine derivative;

[0278] iii) a bis-primary diamine residue of formula -NH-Y-NH-, where Y represents a linear or branched hydrocarbon radical, or alternatively the divalent radical -CH2-CH2 -SS-CH2-CH2-; or

[0279] iv) a ureylene group of formula -NH-CO-NH-.

[0280] Preferably, X is an anion such as chloride or bromide.

[0281] These polymers generally have a number average molecular mass between 1000 and 100,000.

[0282] It is particularly possible to use polymers made up of repeated motifs conforming to the following formula (VIII): ^10 ^12 -N*(CH2)„-lt-(CH2)p — (VIII) X R13 X

[0283] in which

[0284] Rio, Ru, Ri2 and R13, which may be identical or different, denote an alkyl or hydroxyalkyl radical containing approximately 1 to 4 carbon atoms, n and p are integers ranging from approximately 2 to 20, and X is an anion derived from a mineral or organic acid.

[0285] A particularly preferred compound of formula (VIII) is that in which R10, Ru R[2 and R13 represent a methyl group, n=3, p=6 and X=C1, which is called hexadimethrine chloride according to INCI nomenclature (CTFA).

[0286] (9) Polyamines such as Polyquart H sold by Cognis, which is given under the reference name "Polyethylene glycol (15) tallow polyamine" in the CTFA dictionary.

[0287] (10) Crosslinked polymers of methacryloyloxy(Ci-C4)alkyltri(Ci-C4) salts )alkylammonium such as polymers obtained by homopolymerization of quaternized dimethylaminoethyl methacrylate with methyl chloride, or by copo Lymerization of acrylamide with quaternized dimethylaminoethyl methacrylate with methyl chloride, the homo- or copolymerization being followed by crosslinking with a compound containing an olefinic unsaturation, in particular methylenebisacrylamide. A crosslinked acrylamide / methacryloyloxyethyltrimethylammonium chloride copolymer (20 / 80 by weight) can be used in the form of a dispersion containing 50% by weight of said copolymer in a mineral oil. This dispersion is marketed under the name "Salcare® SC 92" by BASF. Alternatively, a crosslinked homopolymer of methacryloyloxyethyltrimethylammonium chloride containing approximately 50% by weight of this homopolymer in a mineral oil or in a liquid ester can be used. These dispersions are sold under the names "Salcare® SC 95" and "Salcare® SC 96" by the company Allied Colloids.

[0288] (11) Cationic polyamino acids

[0289] As a cationic polymer, it may be possible to use cationic polyamino acids, which may be homopolymers or cationic copolymers, with a plurality of amino and carboxyl groups. The amino group may be a primary, secondary, tertiary, or quaternary amino group. The amino group may be present in the backbone of a polymer or in a side group, if present, of the cationic polyamino acids. The carboxyl group may be present in a side group, if present, of the cationic polyamino acids.

[0290] Examples of cationic polyamino acids include cationized collagen, cationized gelatin, hydroxypropyl stear-dimonium hydrolyzed wheat protein, hydroxypropyl cocodimonium hydrolyzed wheat protein, hydroxypropyltrimonium hydrolyzed conchiolin protein, hydroxy-steardimonium hydrolyzed soy protein, hydroxypropyltrimonium hydrolyzed soy protein, cocodimonium hydrolyzed soy protein, and the like.

[0291] (12) Other cationic polymers that can be used in the context of the The present invention includes polyalkyleneimines, in particular polyethyleneimines, polymers containing vinylpyridine or vinylpyridinium motifs, polyamine and epichlorohydrin condensates, quaternary polyureylenes and chitin derivatives.

[0292] Preferably the cationic polymer should be a polyquaternium polymer or a polymeric quaternary ammonium salt.

[0293] Polymeric quaternary ammonium salts are cationic polymers comprising at least one quaternized nitrogen atom. Polyquaternium products (CTFA designation), which contribute primarily to foam quality and skin feel after use, particularly skin feel after use, are examples of polymeric quaternary ammonium salts. lization. These polymers can preferably be chosen from the following polymers:

[0294] Polyquatemium-5, such as the Merquat 5 product sold by Nalco;

[0295] Polyquaterium-6, such as the product Salcare SC 30 sold by BASF and the product Merquat 100 sold by Nalco;

[0296] Polyquatemium-7, such as the products Merquat S, Merquat 2200, Merquat 7SPR, and Merquat 550 sold by Nalco and the product Salcare SC 10 sold by BASF;

[0297] Polyquatemium-10, such as the Polymer JR400 product sold by Amerchol;

[0298] Polyquatemium-11, such as the Gafquat 755, Gafquat 755N and Gafquat 734 products sold by ISP;

[0299] Polyquatemium-15, such as the Rohagit KF 720 F product sold by Rohm;

[0300] Polyquatemium-16, such as the Luviquat FC905, Luviquat FC370, Luviquat HM552 and Luviquat FC550 products sold by BASF;

[0301] Polyquatemium-28, such as the Styleze CC10 product sold by ISP;

[0302] Polyquatemium-44, such as the Luviquat Care product sold by BASF;

[0303] Polyquatemium-46, such as the Luviquat Hold product sold by BASF; and

[0304] Polyquatemium-47, such as the Merquat 2001 product sold by Nalco.

[0305] The cationic polymer(s) may be present in the composition according to the present invention in an amount of 0.001% to 5% by weight, preferably 0.005% to 3% by weight, more preferably 0.01% to 2% by weight, and even more preferably 0.05% to 1% by weight, relative to the total weight of the composition.

[0306] - Surfactant

[0307] The composition according to the present invention may comprise at least one surfactant. Only one type of nonionic surfactant may be used, but two or more different types of nonionic surfactants may be used in combination.

[0308] Any surfactant may be used for the present invention. One type of surfactant is not particularly limited as long as the effect of the present invention is obtained. Since the effect of the present invention can be produced from the combination of (a) polylysine and (b) coloring agent of the present invention, any type of surfactant can be used.

[0309] In a preferred embodiment, the surfactant used for the present invention can be chosen from anionic surfactants and non-ionic surfactants, and mixtures thereof.

[0310] • Non-ionic surfactant

[0311] The nonionic surfactant may have an HLB (Hydrophilic Lipophilic Balance) value of 3.0 to 7.0, preferably 3.5 to 6.0, and more preferably 4.0 to 5.0. Alternatively, the nonionic surfactant may have an HLB value of 11 to 17. preferably from 12 to 16, and more preferably from 13 to 15. If two or more non-ionic surfactants are used, the HLB value is determined by the weighted average of the HLB values ​​of all the non-ionic surfactants.

[0312] The non-ionic surfactant may be selected from:

[0313] (1) surfactants selected from fatty acid polyglyceryl esters, alkyl polyoxyalkylated glycerides and polyoxyalkylated fatty ethers;

[0314] (2) mixed esters of fatty acid or fatty alcohol, carboxylic acid and glycerol;

[0315] (3) fatty acid esters of sugars and fatty alcohol ethers of sugars;

[0316] (4) surfactants selected from sorbitan fatty esters and oxy- fatty esters alkylated sorbitan, and oxyalkylated fatty esters;

[0317] (5) sequenced copolymers of ethylene oxide (A) and propylene oxide (B),

[0318] (6) alkyl (Ci6-C30) polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO),

[0319] (7) silicone surfactants, and

[0320] (8) mixtures of these.

[0321] The surfactant (1) may be a fluid at a temperature less than or equal to 45 °C.

[0322] The surfactant (1) may in particular be:

[0323] - polyglyceryl fatty acid esters of at least one, preferably one, fatty acid comprising at least one saturated or unsaturated, linear or branched C8-C22 hydrocarbon group, such as a C8-C22 alkyl or alkenyl group, preferably a C8-C18 alkyl or alkenyl group, and more preferably a C8-C12 alkyl or alkenyl group, and 2-12 glycerols, preferably 2-10 glycerols and more preferably 2-8 glycerols;

[0324] - polyoxyethylenated alkyl glycerides (PEGyls) such as polyethylene derivatives glycol of a mixture of mono-, di- and tri-glycerides of caprylic and capric acids (preferably 2 to 30 ethylene oxide motifs, more preferably 2 to 20 ethylene oxide motifs, and even more preferably 2 to 10 ethylene oxide motifs), for example, PEG-6 caprylic / capric glycerides, PEG-7 caprylic / capric glycerides and PEG-7 glyceryl cocoate;

[0325] - polyoxyethylenated fatty ethers of at least one fatty alcohol, preferably one, comprising at least one saturated or unsaturated, linear or branched C8-C22 hydrocarbon group, such as a C8-C22 alkyl or alkenyl group, preferably a C8-C18 alkyl or alkenyl group, and more preferably a C8-C12 alkyl or alkenyl group, and 2 to 60 ethylene oxides, preferably 2 to 30 ethylene oxides, and more preferably 2 to 10 ethylene oxides; and

[0326] - their mixtures.

[0327] It is preferable that the polyglyceryl ester of fatty acid have a poly- fraction glycerol derived from 2 to 10 glycerols, more preferably from 2 to 8 glycerols, and even more preferably from 4 to 6 glycerols.

[0328] The fatty acid polyglyceryl ester may be selected from mono, di and triesters of saturated or unsaturated acid, preferably of saturated acid, including 8 to 22 carbon atoms, preferably 8 to 18 carbon atoms, and more preferably 8 to 12 carbon atoms, such as caprylic acid, capric acid, lauric acid, oleic acid, stearic acid, isostearic acid and myristic acid.

[0329] Polyoxyalkylated fatty ethers, preferably polyoxyethylated fatty ethers, may comprise from 2 to 60 ethylene oxide units, preferably from 2 to 30 ethylene oxide units, and more preferably from 2 to 10 ethylene oxide units. The fatty chain of the ethers may be selected in particular from lauryl, behenyl, arachidyl, stearyl, and cetyl units, and mixtures thereof, such as cetearyl. Examples of ethoxylated fatty ethers include lauryl alcohol ethers containing 2, 3, 4 and 5 ethylene oxide motifs (CTFA names: Laureth-2, Laureth-3, Laureth-4 and Laureth-5), such as products sold under the names Nikkol BL-2 by Nikko Chemicals, Emalex 703 by Nihon Emulsion Co, Ltd, Nikkol BL-4 by Nikko Chemicals and EMALEX 705 by Nihon Emulsion Co, Ltd.Examples also include stearyl alcohol ethers comprising 2, 3, 4, 5 and 20 ethylene oxide motifs (CTFA names: Steareth-2, Steareth-3, Steareth-4, Steareth-5 and Steareth-20), such as products sold under the names Emalex 602 by Nihon Emulsion Co, Ltd, Emalex 603 by Nihon Emulsion Co, Ltd, Nikkol BS-4 by Nikko Chemicals, and Emalex 605 by Nihon Emulsion Co, Ltd.

[0330] It is also preferable that the polyoxyalkylated fatty ethers be polyethylene glycol ethers of alcohols or fatty alcohols in C8-C24 and their polyoxyalkylated derivatives and polypropylene glycol ethers of alcohols or fatty alcohols in C4-C24 such as butyl ether PPG-14 and stearyl ether PPG-15.

[0331] The (2) mixed esters of fatty acids, or fatty alcohols, carboxylic acid, and glycerol, usable as the above-mentioned nonionic surfactant, may be selected in particular from the group comprising mixed esters of fatty acids or fatty alcohols with an alkyl or alkenyl chain containing 8 to 22 carbon atoms, preferably 8 to 18 carbon atoms, and more preferably 8 to 12 carbon atoms, and α-hydroxy acid and / or succinic acid, with glycerol. The α-hydroxy acid may be, for example, citric acid, lactic acid, glycolic acid, or malic acid, and mixtures thereof.

[0332] The alkyl chain of the fatty acids or alcohols from which the mixed esters usable in the nanoemulsion of the present invention are derived may be linear or branched, and saturated or unsaturated. These may include, in particular, stearate, isostearate, linoleate chains, oleate, behenate, arachidonate, palmitate, myristate, laurate, caprate, isostearyl, stearyl, linoleyl, oleyl, behenyl, myristyle, lauryl or capryl, and mixtures thereof.

[0333] Examples of mixed esters usable in the nanoemulsion of the present invention include the mixed ester of glycerol and the mixture of citric acid, lactic acid, linoleic acid and oleic acid (CTFA name: Glyceryl citrate / lactatedinoleate / oleate) sold by Hüls under the name Imwitor 375; the mixed ester of succinic acid and isostearyl alcohol with glycerol (CTFA name: Isostearyl diglyceryl succinate) sold by Hüls under the name Imwitor 780 K; the mixed ester of citric acid and stearic acid with glycerol (CTFA name: Glyceryl stearate citrate) sold by Hüls under the name Imwitor 370; the mixed ester of lactic acid and stearic acid with glycerol (name CTFA: Glyceryl stearate lactate) sold by the company Danisco under the name Lactodan B 30 or Rylo LA30.

[0334] The (3) fatty acid esters of sugars, usable as the above nonionic surfactant, may be selected in particular from the group comprising esters or mixtures of C8-C22 fatty acid esters and sucrose, maltose, glucose or fructose, and esters or mixtures of C14-C22 fatty acid esters and methylglucose.

[0335] The C8-C22 or C14-C22 fatty acids forming the fatty acid motif of the esters usable in the present invention comprise a saturated or unsaturated linear alkyl or alkenyl chain containing 8 to 22 or 14 to 22 carbon atoms, respectively. The fatty acid motif of the esters may be selected in particular from stearates, behenates, arachidonates, palmitates, myristates, laurates, and caprates, and mixtures thereof. Stearates are preferably used.

[0336] The (3) fatty alcohol ethers of sugars, usable as the above nonionic surfactant, may be solid at a temperature of 45°C or lower and may be selected in particular from the group comprising ethers or mixtures of ethers of C8-C22 fatty alcohols and glucose, maltose, sucrose or fructose, and ethers or mixtures of ethers of a C14-C22 fatty alcohol and methylglucose. These include, in particular, alkyl polyglucosides.

[0337] The C8-C22 or C14-C22 fatty alcohols forming the fatty acid motif of the ethers that can be used in the nanoemulsion of the present invention comprise a linear alkyl or alkenyl chain, saturated or unsaturated, containing from 8 to 22 or from 14 to 22 carbon atoms, respectively. The fatty acid motif of the ethers can be selected in particular from the following motifs: decyl, cetyl, behenyl, arachidyl, stearyl, palmityl, myristyle, lauryl, capryl, hexadecanoyl, and mixtures thereof, such as cetearyl.

[0338] The (4) fatty sorbitan esters and the oxyalkylated fatty sorbitan esters that can be used as the above nonionic surfactant may be selected from the The group comprising Ci6-C22 sorbitan fatty acid esters and Ci6-C22-Us oxyethylenated sorbitan fatty acid esters can be formed from at least one fatty acid having at least one saturated linear alkyl chain containing, respectively, from 16 to 22 carbon atoms, and sorbitol or ethoxylated sorbitol. The oxyethylenated esters can generally comprise from 1 to 100 ethylene glycol units and preferably from 2 to 40 ethylene oxide (EO) units.

[0339] These esters may be selected in particular from stearates, behenates, arachidates, palmitates, and mixtures thereof. Stearates and palmitates are preferably used.

[0340] The (4) oxyalkylated fatty esters, preferably ethoxylated fatty esters, usable as the above-mentioned nonionic surfactant, may be esters formed of 1 to 100 ethylene oxide units, preferably 2 to 60 ethylene oxide units, and more preferably 2 to 30 ethylene oxide units, and of at least one fatty acid chain containing 8 to 22 carbon atoms, preferably 8 to 18 carbon atoms, and more preferably 8 to 12 carbon atoms. The fatty acid chain in the esters may be selected in particular from stearate, behenate, arachidate, and palmitate units, and mixtures thereof.Examples of ethoxylated fatty esters include stearic acid ester containing 40 ethylene oxide motifs, such as the product marketed under the name Myrj 52 (CTFA name: PEG-40 stearate) by ICI, and behenic acid ester containing 8 ethylene oxide motifs (CTFA name: PEG-8 behenate), such as the product marketed under the name Compritol HD5 ATO by Gattefosse.

[0341] The (5) sequenced copolymers of ethylene oxide (A) and propylene oxide (B), usable as the above nonionic surfactant, may be selected in particular from the sequenced copolymers of formula (I):

[0342] HO(C2H4O)x(C3H6O)y(C2H4O)zH (I)

[0343] in which x, y and z are integers such that x+z ranges from 2 to 100 and y ranges from 14 to 60, and their mixtures, and more particularly among the sequenced copolymers of formula (I) having an HLB value ranging from 8.0 to 14.0.

[0344] The (6)alkyl (Ci6-C30) polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) ethers, which can be used as the above nonionic surfactant, can be selected from the group consisting of:

[0345] PPG-6 Decyltetradeceth-30; Polyoxyethylene (30) Polyoxypropylene (6) Tetradecyl Ether such as those sold under the name Nikkol PEN-4630 from Nikko Chemicals Co.,

[0346] PPG-6 Decyltetradeceth-12; Polyoxyethylene (12) Polyoxypropylene (6) Tetradecyl Ether such as those sold under the name Nikkol PEN-4612 from Nikko Chemicals Co.,

[0347] PPG-13 Decyltetradeceth-24; Polyoxyethylene (24) Polyoxypropylene (13) Decyltetradecyl Ether such as those sold as UNILUBE 50MT-2200B from NOF Cor- poration,

[0348] PPG-6 Decyltetradeceth-20; Polyoxyethylene (20) Polyoxypropylene (6) Decyltetradecyl Ether such as those sold under the name Nikkol PEN-4620 by Nikko Chemicals Co,

[0349] PPG-4 Ceteth-1; Polyoxyethylene (1) Polyoxypropylene (4) Cetyl Ether such as those sold by Nikkol PBC-31 of Nikko Chemicals Co,

[0350] PPG-8 Ceteth-1; Polyoxyethylene (1) Polyoxypropylene (8) Cetyl Ether such as those sold under the name Nikkol PBC-41 by Nikko Chemicals Co,

[0351] PPG-4 Ceteth-10; Polyoxyethylene (10) Polyoxypropylene (4) Cetyl Ether such as those sold under the name Nikkol PBC-33 by Nikko Chemicals Co.,

[0352] PPG-4 Ceteth-20; Polyoxyethylene (20) Polyoxypropylene (4) Cetyl Ether such as those sold under the name Nikkol PBC-34 by Nikko Chemicals Co.,

[0353] PPG-5 Ceteth-20; Polyoxyethylene (20) Polyoxypropylene (5) Cetyl Ether such as those sold under the name Procetyl AWS by Croda Inc,

[0354] PPG-8 Ceteth-20; Polyoxyethylene (20) Polyoxypropylene (8) Cetyl Ether such as those sold under the name Nikkol PBC-44 by Nikko Chemicals Co. and

[0355] PPG-23 Steareth-34; Polyoxyethylene Polyoxypropylene Stearyl Ether (34 EO) (23 PO) such as those sold under the name Unisafe 34S-23 by Pola Chemical Industries. They can provide a composition with long-term stability, even if the temperature of the composition is raised and lowered in a relatively short period.

[0356] As (7) silicone surfactants, which can be used like the nonionic surfactant above, mention may be made of those disclosed in documents US-A-5364633 and US-A-5411744.

[0357] The (7) silicone surfactant as a nonionic surfactant above may preferably be a compound of formula (I):

[0358] in which:

[0359] Ri, R2 and R3, independently of each other, represent an i-C6 alkyl radical or a -(CH2)x-(OCH2CH2)y-(OCH2CH2CH2)z-OR4 radical, at least one Rb radical R2 or R3 not being an alkyl radical; R4 being a hydrogen, an alkyl radical or an acyl radical;

[0360] A is an integer ranging from 0 to 200;

[0361] B is an integer from 0 to 50; provided that A and B are not simultaneous tanément equal to zero;

[0362] x is an integer from 1 to 6;

[0363] y is an integer between 1 and 30;

[0364] z is an integer ranging from 0 to 5.

[0365] According to a preferred embodiment of the present invention, in the compound of formula (I), the alkyl radical is a methyl radical, x is an integer from 2 to 6 and y is an integer from 4 to 30.

[0366] Examples of silicone surfactants of formula (I) include compounds of formula (II): (CH3)3SiO - [(CH3)2SiO]A - (CH3SiO)B - Si(CH3}3 I (H) (CH2)2-(OCH2CH2)y-OH

[0367] in which A is an integer from 20 to 105, B is an integer from 2 to 10 and y is an integer from 10 to 20.

[0368] By way of examples of silicone surfactants of formula (I), we may also mention the compounds of formula (III):

[0369] H-(OCH2CH2)y-(CH2)3-[(CH3)2SiO]A -(CH2)3-(OCH2CH2)y-OH (III)

[0370] in which A' and y are integers from 10 to 20.

[0371] "Anionic surfactants:

[0372] According to the present invention, the type of anionic surfactant is not limited. Preferably, the anionic surfactant should be selected from the group consisting of (C6-C30)alkyl sulfates, (C6-C30)alkyl ether sulfates, (C6-C3o)alkylamido ether sulfates, alkylaryl polyether sulfates, and monoglyceride sulfates; (C6-C3o)alkylsulfonates, (C6-C30)alkylamide sulfonates, (C6-C3o)alkylaryl sulfonates, α-olefin sulfonates, and paraffin sulfonates; (C6-C30)alkyl phosphates; (C6-C30)alkyl sulfosuccinates, (C6-C30)alkyl ether sulfosuccinates, and (C6-C3o)alkylamide sulfosuccinates; (C6-C30)alkyl sulfoacetates; (C6-C24)acyl sarcosinates; (C6-C24)acyl glutamates; (C6-C30)carboxylic alkyl polyglycoside ethers; (C6-C30)alkyl polyglycoside sulfosuccinates; (C6-C30)alkyl sulfosuc-cinamates; (C6-C24)acyl isethionates; N-(C6-C24)acyl taurates; C6-C30 fatty acid salts; coconut oil acid salts or hydrogenated coconut oil acid salts; (C8-C20)acyl lactylates;uronic acid salts of (C6-C30)alkyl-D-galactoside; polyoxyalkylenated (C6-C30)alkyl ether carboxylic acids; polyoxyalkylenated (C6-C30)alkylaryl ether carboxylic acids; and polyoxyalkylenated (C6-C30)alkylamido ether carboxylic acids.

[0373] In at least one embodiment, the anionic surfactants are in the form of salts such as alkali metal salts, for example sodium; metal salts Alkaline earth metals, for example magnesium; ammonium salts; amine salts; amino alcohol salts. Depending on the conditions, they can also be in acidic form.

[0374] It is also preferred that the anionic surfactant be chosen from polyoxyalkylated anionic surfactants, for example, comprising 2 to 50 alkylene oxide groups, for example ethylene oxide.

[0375] As an example of a polyoxyalkylated anionic surfactant, one may cite a C6-C30 polyethoxylated fatty alcohol ester comprising 2 to 50 ethylene oxide motifs and a carboxylic acid, a phosphoric acid or a sulfonic acid, such as ceteth-10 phosphate.

[0376] The surfactant(s) may be present in the composition according to the present invention in an amount of 0.1% to 20% by weight, preferably 0.5% to 15% by weight, more preferably 1% to 10% by weight, and even more preferably 2% to 8% by weight, relative to the total weight of the composition.

[0377] - Thickening agent

[0378] The composition according to the present invention may comprise at least one thickening agent. Only one type of thickening agent may be used, but two or more different types of thickening agent may be used in combination.

[0379] A particular type of thickening agent is not restricted as long as the effect of the present invention is obtained. Since the effect of the present invention can be produced from the combination of (a) polylysine and (b) the coloring agent of the present invention, any kind of thickening agent may be used.

[0380] It is preferable that the thickening agent be chosen from the group consisting of:

[0381] (i) associative thickeners;

[0382] (ii) crosslinked acrylic acid homopolymers;

[0383] (iii) crosslinked copolymers of (meth)acrylic acid and alkyl acrylate (in Ci-C6);

[0384] (iv) non-ionic homopolymers and copolymers comprising ethylenically unsaturated monomers of ester and / or amide type;

[0385] (v) ammonium acrylate homopolymers and acrylate copolymers ammonium and acrylamide; And

[0386] (vi) polysaccharides.

[0387] (i) As used herein, the expression "associative thickener" means an associative thickener philophile comprising both hydrophilic and hydrophobic motifs, for example, at least one C8-C30 fatty chain and at least one hydrophilic motif.

[0388] Representative associative thickeners that may be used are associative polymers selected from:

[0389] (aa) non-ionic amphiphilic polymers comprising at least one fatty chain and at least one hydrophilic motif;

[0390] (bb) anionic amphiphilic polymers comprising at least one hydrophilic motif and at least one fatty chain motif;

[0391] (cc) cationic amphiphilic polymers comprising at least one hydrophilic motif and at least one fatty chain motif; and

[0392] (dd) amphiphilic amphoteric polymers comprising at least one hydrophilic motif and at least one fatty chain motif,

[0393] in which the fatty chain contains from 10 to 30 carbon atoms.

[0394] Non-ionic amphiphilic polymers (aa) comprising at least one fatty chain and at least one hydrophilic motif may, for example, be selected from:

[0395] (1) celluloses modified by groups comprising at least one fatty chain; Examples that could be cited include:

[0396] - hydroxyethylcelluloses modified by groups comprising at least one fatty chain selected from alkyl, arylalkyl and alkylaryl groups, and in which the alkyl groups are, for example, in C8-C22, such as the product Natrosol Plus Grade 330 CS (alkyls in C1-C6) sold by the company Aqualon, and the product Bermocoll EHM 100 sold by the company Berol Nobel, and

[0397] - celluloses modified by alkylphenyl ether groups of polyalkylene glycol, such as the product Amercell Polymer HM-1500 (nonylphenyl polyethylene glycol ether (15)) sold by the company Amerchol.

[0398] (2) hydroxypropyl guars modified by groups comprising at least one fatty chain, such as the product Esaflor HM 22 (C22 alkyl chain) marketed by the company Lamberti, and the products Miracare XC95-3 (CM alkyl chain) and RE205-1 (C2o alkyl chain) marketed by the company Rhodia Chimie.

[0399] (3) polyether methanes comprising at least one fatty chain, such as alkyl or alkenyl groups in C10-C30, for example the products Elfacos T 210 and Elfacos T 212 sold by Akzo or the products Aculyn 44 and Aculyn 46 sold by Rohm & Haas.

[0400] (4) copolymers of vinylpyrrolidone and hydrophobic chain monomers fat;

[0401] Examples that can be mentioned include:

[0402] - the products Antaron V216 and Ganex V216 (vinylpyrrolidone copolymer / hexadecene) sold by the company LS.P., and

[0403] - the products Antaron V220 and Ganex V220 (vinylpyrrolidone / eicosene copolymer) sold by the company LS.P.

[0404] (5) C1-C6 alkyl acrylate or methacrylate copolymers and amphiphilic monomers comprising at least one fatty chain, such as the oxyethylenated methyl methacrylate / stearyl acrylate copolymer marketed by the company Goldschmidt under the name Antil 208.

[0405] (6) copolymers of hydrophilic acrylates or methacrylates and monomers hydrophobic compounds comprising at least one fatty chain, such as a polyethylene glycol methacrylate / lauryl methacrylate copolymer.

[0406] Anionic amphiphilic polymers (bb) comprising at least one hydrophilic motif and at least one fatty chain motif may, for example, be selected from those comprising at least one fatty chain allyl ether motif and at least one hydrophilic motif comprising an ethylenically unsaturated anionic monomer motif, for example, a vinylcarboxylic acid motif and furthermore, for example, be selected from motifs derived from acrylic acids, methacrylic acids and mixtures thereof, wherein the fatty chain allyl ether motif corresponds to the monomer of formula (I) below:

[0407] CH2=C(R|)CH2OBriR (I)

[0408] wherein Ri is chosen from H and CH3, B is an ethyleneoxy radical, n is chosen from zero and the integers from 1 to 100, R is chosen from hydrocarbon radicals chosen from alkyl, arylalkyl, aryl, alkylaryl, and cy-cloalkyl radicals, containing from 10 to 30 carbon atoms, and furthermore, for example, from 10 to 24 carbon atoms and furthermore, for example, from 12 to 18 carbon atoms.

[0409] In one embodiment, the anionic amphiphilic polymers are, for example, polymers formed from 20% to 60% by weight of acrylic acid and / or methacrylic acid, from 5% to 60% by weight of lower alkyl (meth)acrylates, from 2% to 50% by weight of fat-chain allyl ether of formula (I), and from 0% to 1% by weight of a crosslinking agent which is a well-known copolymerizable unsaturated polyethylene monomer, for example, diallyl phthalate, allyl (meth)acrylate, divinylbenzene, (poly)ethylene glycol dimethacrylate and methylenebisa-crylamide.

[0410] Anionic amphiphilic polymers may further be selected, for example, from those comprising at least one hydrophilic motif of the unsaturated olefinic carboxylic acid type, and at least one hydrophobic motif of a type such as an alkyl ester (C10-C30) of an unsaturated carboxylic acid. The hydrophilic motif of the unsaturated olefinic carboxylic acid type corresponds, for example, to the monomer of formula (II) below: L » RO

[0411] wherein R1 is selected from H, CH3, and C2H5, i.e., the acrylic acid, methacrylic acid, and methacrylic acid motifs. The hydrophobic motif of the type such that an alkyl ester (in C10-C30) of an unsaturated carboxylic acid corresponds by example with the monomer of formula (III) below: , <in) 4

[0412] wherein R1 is selected from H, CH3, and C2H5 (i.e. acrylate, methacrylate and methacrylate motifs) and is, for example, selected from H (acrylate motifs) and CH3 (methacrylate motifs), and R2 is selected from the C10-C30 alkyl radicals, for example, the C2-C22 alkyl radicals.

[0413] Examples of alkyl esters (Ci0-C30) of unsaturated carboxylic acids include lauryl acrylate, stearyl acrylate, decyl acrylate, isodecyl acrylate and dodecyl acrylate, and the corresponding methacrylates, lauryl methacrylate, stearyl methacrylate, decyl methacrylate, isodecyl methacrylate and dodecyl methacrylate.

[0414] Among the aforementioned polymers, one can cite, for example, the products sold by the Goodrich company under the trade names Pemulen TRI, Pemulen TR2, and Carbopol 1382, and also, for example, Pemulen TRI, and the product sold by the SEPC company under the name Coatex SX.

[0415] Among the anionic amphiphilic polymers with fatty chains, we can also mention, for example, the ethoxylated copolymer of methacrylic acid / methyl acrylate / alkyl dimethyl-meta-isopropenylbenzylisocyanate sold under the name Viscophobe DB 1000 by the company Amerchol.

[0416] The (cc) cationic amphiphilic polymers used are, for example, chosen from quaternized cellulose derivatives and polyacrylates having amino side groups.

[0417] Quatemized cellulose derivatives are, for example, selected from

[0418] quaternized celluloses modified by groups comprising at least one fatty chain, such as alkyl, arylalkyl, alkylaryl groups comprising at least 8 carbon atoms, and mixtures thereof, and

[0419] quaternized hydroxyethylcelluloses modified by groups comprising at least one fatty chain, such as alkyl, arylalkyl and alkylaryl groups comprising at least 8 carbon atoms, and mixtures thereof.

[0420] Quaternized and non-quaternized polyacrylates comprising amino side groups exhibit, for example, hydrophobic groups, such as steareth 20 (polyoxyethylenated stearyl alcohol(20)) and alkyl itaconate (C10-C30)PEG-20.

[0421] The alkyl radicals carried by the quaternized celluloses and hydroxyethylcelluloses above, for example, contain from 8 to 30 carbon atoms.

[0422] Examples of quaternized alkylhydroxyethylcelluloses comprising C8-C30 fatty chains are the products Quatrisoft LM 200, Quatrisoft LM-X 529-18-A, Quatrisoft LM-X 529-18B (alkyl in Ci2), and Quatrisoft LM-X 529-8 (alkyl in C[8]) sold by the company Amerchol, and the products Crodacel QM, Crodacel QL (alkyl in C 12), and Crodacel QS (alkyl in C[8]) sold by the company Croda.

[0423] Among the (dd) amphiphilic amphoteric polymers comprising at least one hydrophilic motif and at least one fatty chain motif, examples include methacrylamidopropyltrimethylammonium chloride / acrylic acid / alkyl methacrylate copolymers in C10-C30, in which the alkyl radical is, for example, a stearyl radical.

[0424] The associative thickener may be an associative polymeric thickener, preferably an associative polyurethane thickener.

[0425] The associative polyurethane thickener can be cationic or non-ionic.

[0426] Among the associative polyurethane thickeners, associative polyurethane derivatives such as those obtained by polymerization may be mentioned: of about 20 to 70 wt% of a carboxylic acid containing an α,[3-monoethylenic unsaturation, of about 20 to 80 wt% of a non-surfactant monomer containing an α,[3-monoethylenic unsaturation, of about 0.5 to 60 wt% of a non-ionic mono-urethane which is the product of the reaction of a monohydroxylated surfactant with a monoethylenically unsaturated monoisocyanate.

[0427] Among the associative polyurethane thickeners, we can mention Polyurethane-39 sold under the product name Luvigel Star® by the company BASF.

[0428] (ii) Among the crosslinked acrylic acid homopolymers, mention may be made of those crosslinked with an allylic alcohol ether of the sugar series. An example is carbomer, which is a homopolymer of acrylic acid crosslinked with an allyl ether of pentaerythritol, an allyl ether of sucrose or an allyl ether of propylene, such as the products sold under the names Carbopol 980, 981, 954, 2984 and 5984 by the Lubrizol company or the products sold under the names Synthalen M and Synthalen K by the 3 VS A company.

[0429] (iii) Crosslinked (meth)acrylic acid and alkyl acrylate copolymers in the Ci-C6 form may be selected from crosslinked methacrylic acid and ethyl acrylate copolymers in the form of an aqueous dispersion comprising 38% of the active material sold, for example, under the name Viscoatex 538C by Coatex, and from crosslinked acrylic acid and ethyl acrylate copolymers in aqueous dispersion comprising 28% of the active material sold under the name Aculyn 33 by Rohm & Haas. Crosslinked methacrylic acid and ethyl acrylate copolymers include an aqueous dispersion comprising 30% of the active material sold under the name CARBOPOL AQUA SF-1 by NOVEON.

[0430] (iv) Among the non-ionic homopolymers or copolymers comprising ethylenically unsaturated ester and / or amide monomers, the following may be cited: products sold under the name: Cyanamer P250 by the company Cytec (polyacrylamide); PMMA MBX-8C by US Cosmetics (methyl methacrylate / ethylene glycol dimethacrylate copolymer); Acryloid B66 by Rohm & Haas (butyl methacrylate / methyl methacrylate copolymer); and BPA 500 by Kobo (polymethyl methacrylate).

[0431] (v) Ammonium acrylate homopolymers that may be mentioned include the product sold under the name Microsap PAS 5193 by the company Hoechst.

[0432] Ammonium acrylate and acrylamide copolymers include the product sold under the name Bozepol C Nouveau or the product PAS 5193 sold by the Hoechst company (which are described and prepared in documents FR-2 416 723, US patent No. 2,798,053, and US patent No. 2,923,692).

[0433] (vi) Polysaccharides are, for example, selected from glucans, modified and unmodified starches (such as those derived, for example, from cereals, e.g. wheat, maize or rice, vegetables, e.g. yellow peas, and tubers, e.g. potatoes or cassava), amylose, amylopectin, glycogen, dextran, celluloses and their derivatives (e.g., methylcelluloses, hydroxyalkylcelluloses, hydroxyethylcelluloses and carboxymethylcelluloses), mannans, xylans, lignins, arabans, galactans, galacturonans, chitins, chitosan, glucuronoxylans, arabinoxylans, xyloglucans, glucomannans, pectic acids, and pectins, alginic acid and alginates, arabinogalactans, carrageenans, agars, glycosaminoglucans, gum arabic, tragacanth gum, ghatti gum, karaya gum, carob gum, galactomannans, such as guar gum, and their non-ionic derivatives (e.g., hydroxypropyl guar), sclerotium gum and xanthan gums, and mixtures thereof. .

[0434] The thickening agent(s) may be present in the composition according to the present invention in an amount of 0.1% to 20% by weight, preferably 0.5% to 15% by weight, more preferably 1% to 10% by weight, and even more preferably 2% to 8% by weight, relative to the total weight of the composition.

[0435] - Cosmetically acceptable hydrophilic organic solvent

[0436] The composition according to the present invention may comprise at least one cosmetically acceptable hydrophilic organic solvent. If two or more of these solvents are used, they may be identical or different.

[0437] A particular type of hydrophilic organic solvent is not restricted as long as the effect of the present invention is obtained. Since the effect of the present invention can be produced from the combination of (a) polylysine and (b) the coloring agent of the present invention, any kind of hydrophilic organic solvent may be used.

[0438] Cosmetically acceptable hydrophilic organic solvent(s) may include, for example, substantially linear or branched lower monoalcohols having from 1 to 8 carbon atoms, such as ethanol, propanol, butanol, isopropanol and isobutanol; aromatic alcohols, such as benzyl alcohol and phenylethyl alcohol; polyols or polyol ethers, such as propylene glycol, dipropylene glycol, isoprene glycol, butylene glycol, glycerin, pro-panediol, caprylyl glycol, sorbitol, monomethyl, monoethyl and monobutyl ethers of ethylene glycol, propylene glycol ethers, such as monomethyl propylene glycol ether, alkyl diethylene glycol ethers, such as monoethyl or monobutyl diethylene glycol ether; polyethylene glycols, such as PEG-4, PEG-6, PEG-8, PEG-20 and their derivatives.

[0439] The quantity of cosmetically acceptable hydrophilic organic solvent(s) in the composition according to the present invention may be between 0.1% and 20% by weight, preferably between 1% and 15% by weight, and more preferably between 2% and 10% by weight, relative to the total weight of the composition.

[0440] - Oil

[0441] The composition according to the present invention may comprise at least one oil. The composition may also comprise two or more oils in combination.

[0442] The term "oil" here means a compound or fatty substance that is in the form of a liquid or a paste (not solid) at room temperature (25°C) under atmospheric pressure (760 mmHg). Oils commonly used in cosmetics can be used alone or in combination.

[0443] A particular type of oil is not limited as long as the effect of the present invention is obtained. Since the effect of the present invention can be produced from the combination of (a) polylysine and (b) coloring agent of the present invention, any kind of oil can be used.

[0444] Oils may be volatile or non-volatile. Preferably, the oil is a non-volatile oil.

[0445] The non-volatile oil may be selected from:

[0446] - hydrocarbon oils of animal origin, such as perhydrosqualene,

[0447] - vegetable hydrocarbon oils, such as phytostearyl esters, such as phytostearyl oleate, phytostearyl isostearate and lauroyl / octyldodecyl / phytostearyl glutamate, triglycerides formed from fatty acid esters of glycerol, in particular in which the fatty acids may have chain lengths from C4 to C36 and especially from C[8 to C36, these oils being linear or branched, saturated or unsaturated; These oils may include heptanoic or octanoic triglycerides, shea oil, alfalfa oil, poppy oil, winter pumpkin oil, millet oil, barley oil, quinoa oil, rye oil, candlenut oil, passionflower oil, shea butter, aloe vera oil, sweet almond oil, peach kernel oil, peanut oil, argan oil, avocado oil, baobab oil, borage oil, broccoli oil, calendula oil, camelina oil, canola oil, carrot oil, safflower oil, linseed oil, rapeseed oil, cottonseed oil, coconut oil, pumpkin seed oil, wheat germ oil, jojoba oil, lily oil, macadamia oil, corn oil, lily of the valley oil, monoi oil, hazelnut oil, apricot kernel oil, walnut oil, olive oil, evening primrose oil, palm oil, blackcurrant seed oil, kiwi seed oil, grapeseed oil, pistachio oil, winter squash oil, pumpkin oil, quinoa oil, rosehip oil, sesame oil, soybean oil, sunflower oil, castor oil and watermelon oil, and mixtures thereof, or alternatively caprylic / capric acid triglycerides,

[0448] - linear or branched hydrocarbon oils of mineral or synthetic origin, such as liquid paraffins and their derivatives, petroleum jelly, mineral oil, polydecenes, polybutenes, hydrogenated polyisobutene such as Parleam, squalane;

[0449] - ether oils containing 10 to 40 carbon atoms, such as dicaprylyl ether;

[0450] - ester oils, for example oils of formula RiCOOR2, in which Ri re presents a linear or branched fatty acid residue containing from 1 to 40 carbon atoms, preferably from 1 to 26 carbon atoms, and R2 represents a hydrocarbon chain, particularly branched, containing from 1 to 40 carbon atoms, preferably from 1 to 26 carbon atoms, provided that Ri + R2 → 10. The esters may be selected, in particular, from fatty acid esters of alcohols, for example cetyl esters, especially cetostearyl octanoate, isopropyl alcohol esters, such as isopropyl myristate, isopropyl palmitate, ethyl palmitate, 2-ethylhexyl palmitate, isopropyl stearate, isopropyl isostearate, isostearyl isostearate, octyl stearate, hydroxylated esters, for example isostearyl lactate, octyl hydroxystearate, diisopropyl adipate, heptanoates, and in particular isostearyl heptanoate, octanoates, decanoates or ricinoleates of alcohol or polyalcohol, for example propylene glycol dioctanoate, cetyl octanoate,tridecyl octanoate, 2-ethylhexyl 4-diheptanoate, 2-ethylhexyl palmitate, alkyl benzoates, in particular Ci2-Ci5 alkyl benzoates, polyethylene glycol diheptanoate, propylene glycol 2-diethylhexanoate, and mixtures thereof, hexyl laurate, neopentanoic acid esters, for example isodecyl neopentanoate, isotridecyl neopentanoate, isostearyl neopentanoate, octyldecyl neopentanoate, isononanoic acid esters, for example isononyl isononanoate, isotridecyl isononanoate, octyl isononanoate, hydroxylated esters, for example isostearyl lactate and diisostearyl malate.

[0451] - fluorinated oils which are optionally partially hydrocarbon-based and / or silicone, for example fluorosilicone oils, fluoropolyethers and fluoro- rosilicones;

[0452] - fatty alcohols, saturated or unsaturated, linear or branched, containing 6 to 30 carbon atoms and more particularly from 8 to 30 carbon atoms: we can mention cetyl alcohol, stearyl alcohol and their mixture (cetylstearyl alcohol), octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleyl alcohol, linoleyl alcohol;

[0453] - silicone oils, for example, linear organopolysiloxanes such as di- methylpolysiloxane, methylphenylpolysiloxane, methylhydrogenopolysiloxane and the like; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane; and phenyl silicone oils such as phenyltrimethicone, and

[0454] - mixtures thereof.

[0455] The oil may be present in a range of 2% to 40% by weight, preferably 5% to 35% by weight, and more preferably 10% to 30% by weight relative to the total weight of the composition.

[0456] - Additional active ingredient

[0457] The composition according to the present invention may include at least one additional cosmetically active ingredient e. The term "active ingredient" used here refers to an organic compound having any cosmetic or dermatological effects on a keratinous substance, such as skin and hair. Well-known cosmetic active ingredients may be used as optional active ingredients. Preferably, the additional cosmetic ingredients are active ingredients for the care or conditioning of keratinous substances, such as skin and hair.

[0458] Additional active ingredients may include, but are not limited to, vitamin derivatives, such as vitamin A (retinol), vitamin C (ascorbic acid), vitamin B3 (niacin) derivatives and the like, mucopolysaccharides and their derivatives, such as hyaluronic acid and chondroitin and their derivatives, and ceramide compounds, such as natural or synthetic ceramides and / or glycoceramides and / or pseudoceramides and / or neoceramides, for example 2-oleamido-1,3-octadecanediol.

[0459] The additional active ingredient(s) may be present in the composition according to the present invention in an amount of 0.01% to 10% by weight, preferably 0.05% to 5% by weight, more preferably 0.1% to 3% by weight, and even more preferably 0.2% to 1% by weight, relative to the total weight of the composition.

[0460] - Water

[0461] The composition according to the present invention typically comprises water.

[0462] The amount of water in the composition may be 20% by weight or more, preferably 30% by weight or more, more preferably 40% by weight or more, and even more preferably 45% by weight or more; and / or may be 95% by weight or less, preferably 90% by weight or less, and more preferably 85% by weight or less, relative to the total weight of the composition.

[0463] - Adjuvants

[0464] Additional adjuvant(s) may be included in the composition, which may be chosen from the group consisting of: anionic, non-ionic or amphoteric polymers; penetration agents; hair loss control agents; anti-dandruff agents, suspending agents; chelating or sequestering agents, such as EDTA, pyrophosphate; buffers; opacifying agents; perfumes; pH correcting agents of acidic agent(s); antioxidant or preservative agents, such as chlorhexidine digluconate, sodium metabisulfite and phenoxyethanol; stabilizers; and mixtures thereof.

[0465] The adjuvants may be present in the second composition of the present invention in an amount ranging preferably from 0.001% to 20% by weight, preferably from 0.01% to 10% by weight, more preferably from 0.1% to 5% by weight, and even more preferably from 0.2% to 2% by weight, relative to the total weight of the composition.

[0466] In certain specific embodiments of the prior invention, the composition comprises at least one acid in an amount less than 5% by weight, preferably less than 3% by weight, more preferably less than 1% by weight, even more preferably less than 0.3% by weight, and in particular less than 0.1% by weight, relative to the total weight of the composition.

[0467] In certain specific embodiments of the present invention, the composition comprises the acid in such an amount that the ratio of the number of amine groups of (a) polylysine to the number of acid groups of the acid is 3 times or more, preferably 4 times or more, more preferably 5 times or more, and in particular 10 times or more. In other words, in the composition according to the present invention, the number of amine groups of (a) polylysine is 3 times greater, preferably 4 times greater, more preferably 5 times greater, and in particular 10 times greater than the number of acid groups of the acid, if included.

[0468] The at least one acid, if present, may be selected from a fatty carboxylic acid, a fatty ether carboxylic acid, a fatty ether phosphoric acid, a fatty phosphoric acid, and mixtures thereof. The at least one acid (b) may contain one or two or more acid groups (a polyacid).

[0469] The composition according to the present invention can take various forms, such as a solution, a gel, a lotion, a serum, a suspension, a dispersion, a fluid, milk, paste, cream, foam, emulsion (oil-in-water or water-in-oil form), multiple emulsions (e.g., water-in-water, polyol-in-water, and water-in-water), and the like. In one specific embodiment, the composition according to the present invention is in the form of an emulsion in the oil-in-water or water-in-oil form.

[0470] The composition according to the present invention can be prepared by mixing the essential and optional ingredients above according to any of the processes which are well known to the person skilled in the art.

[0471] [Cosmetic process and use]

[0472] The present invention also relates to a cosmetic process for coloring keratin fibers, preferably hair, comprising the step:

[0473] application on the keratinous fibers of the composition according to the present invention.

[0474] The application step can be carried out by any conventional means such as an ap- folding tool, for example hands, a sprayer, a brush and a comb.

[0475] When the composition according to the present invention comprises at least one oxidative dye, the process according to the present invention further comprises an additional step of mixing the composition with at least one developer comprising at least one oxidizing agent to prepare the composition ready for use before application.

[0476] The oxidizing agent may be selected from hydrogen peroxide, peroxygenated salts, and compounds capable of producing hydrogen peroxide by hydrolysis. For example, the oxidizing agent may be selected from hydrogen peroxide, urea peroxide, alkali metal bromates and ferricyanides, and persalts such as perborates and persulfates. At least one oxidase enzyme selected, for example, from laccases, peroxidases, and 2-electron oxidoreductases such as uricase may also be used as the oxidizing agent, where appropriate in the presence of its respective donor or cofactor.

[0477] In one embodiment, the oxidizing agent is hydrogen peroxide, and the developer is an aqueous solution of hydrogen peroxide.

[0478] In the developer in the form of an aqueous solution of hydrogen peroxide, the concentration of the hydrogen peroxide stabilizer can be between 0.0001% and 5% by weight, such as for example between 0.01% and 2% by weight, relative to the total weight of the developer.

[0479] The mixing ratio of the composition according to the present invention and the developer is not limited. The mixing ratio may be from 1:3 to 3:1, preferably from 1:2 to 2:1, and more preferably from 1:1, as a weight ratio of these.

[0480] It is preferable that the process according to the present invention further include a washing step, with or without drying, of the keratinous fibers before and / or after the step of applying the composition to the keratinous fibers.

[0481] The keratinous fibers to which the composition has been applied may be left for an appropriate time as necessary to treat the keratinous fibers. The duration of the treatment is not limited, but it may be between 1 minute and 1 hour, preferably between 5 minutes and 50 minutes, and more preferably between 10 minutes and 40 minutes.

[0482] Keratin fibers can be treated at room temperature. Alternatively, keratin fibers can be heated to between 25°C and 65°C, preferably between 30°C and 60°C, more preferably between 35°C and 55°C, and even more preferably between 40°C and 50°C, before and / or during and / or after the step of applying the composition to the keratin fibers. Preferably, the keratin fibers are treated without heating, before and / or during and / or after the step of applying the composition to the keratin fibers.

[0483] The present invention also relates to a cosmetic process or the use of (a) polylysine to enhance the intensity and durability of the color of keratinous fibers, such as hair, colored with the composition comprising (b) at least one coloring agent selected from dyes and pigments, where the dyes are selected from oxidative dyes and direct dyes other than iridoid dyes, and (a) polylysine has a weight-average molecular weight in the range of 4,500 g / mol to 25,000 g / mol.

[0484] For ingredients (a), (b), composition, and alkaline agent, those explained above may be used. EXAMPLES

[0485] The present invention will be described in more detail with the aid of examples. However, these examples shall not be construed as limiting the scope of the present invention.

[0486] [Preparation]

[0487] (Examples)

[0488] The compositions according to Examples 1 to 6 and Comparative Examples 1 to 3 were prepared by mixing the ingredients listed in Tables 1 and 2 according to the following protocols. The formulations of the compositions and their pH values ​​are summarized in the tables. Epsilon-poly-L-lysines (MW: approximately 4,700 g / mol, basic grade) were obtained from JNC Corporation. Epsilon-poly-L-lysine (MW: approximately 18,000 g / mol, basic grade) was obtained from TCR Canada. The numerical values ​​of the quantities of ingredients shown in the tables are all based on "% by weight" as active raw materials.

[0489] - Protocol for preparing examples 1 to 4 and comparative examples 1 and 2

[0490] In 40% of the total quantity of deionized water and other solvents, the chelating agent was dissolved at 80°C to prepare an aqueous phase. In parallel, in another In a beaker, the oils and surfactants were melted at 80°C to prepare an oil phase. Once these components were thoroughly melted and the aqueous phase was homogeneous, the contents of the oil phase were poured into the aqueous phase and emulsification was carried out for 10 minutes with stirring. After the mixture had cooled to 50°C, antioxidants and oxidative dyes—namely, p-phenylenediamine, resorcinol, 2,4-diaminophenoxyethanol HCl, p-aminophenol, and / or N,N-bis(2-hydroxyethyl)-p-phenylenediamine sulfate—previously dissolved in hot deionized water, were added to the mixture. After cooling to 30°C, the fragrance and epsilon-poly-L-lysine were added. Then, the alkaline agents were added and mixed with the remaining water. The mixture was left to stir until the temperature reached room temperature.

[0491] - Protocol for preparing examples 5 and 6 and comparative example 3

[0492] The thickening agent was dissolved in hot deionized water at 60°C for 10 minutes, then the polymer was added with stirring and dissolved for 10 minutes to prepare an aqueous phase. In a separate beaker, the oils and surfactants were dissolved at 75°C. Once this phase was thoroughly melted, it was added to the previously prepared aqueous phase, and emulsification was carried out with stirring for 10 minutes. The mixture was then cooled to 40°C, and the preservatives, fragrance, and a direct dye (HC blue 16) were added along with the remaining water. The mixture was left to cool to room temperature with stirring.

[0493] [Table 1] - (% active ingredient) Ingredients Ex. 1 Comp. Ex. 1 Ex. 2 Comp. Ex. 2 Ex. 3 Ex. 4 Surfactants 7.3 7.3 7.3 7.3 7.3 7.3 Oils 18 18 18 18 18 18 Hydrophilic solvent 4 4 4 4 4 4 Chelating agent 0.2 0.2 0.2 0.2 0.2 0.2 Antioxidants 1 1 1 1 1 1 p-Phenylenediamine 0.05 0.05 - - 0.05 0.05 Resorcinol 0.035 0.035 - - 0.035 0.035 2,4-Diaminophenoxyethanol HCl 0.05 0.05 0.55 0.55 0.05 0.05 4-Nitro-o-phenylenediamine - - 0.1 0.1 - - p-Aminophenol - - 0.005 0.005 - - N,N-bis(2-hydroxyethyl)-p-phenylenediamine sulfate - - 0.7 0.7 - - Epsilon-poly-L-lysine (4700 g / mol, 25% in water) 2 - 2 - 1 - Epsilon-poly-L-lysine (18000 g / mol, pure) - - - - - 1 Perfume 0.4 0.4 0.4 0.4 0.4 0.4 Alkaline agents 4.3 4.3 5.7 5.7 4.3 4.3 Deionized water qs 100 qs 100 qs 100 qs 100 qs 100 qs 100 pH 10.0 10.0 10.0 10.0 10.0 9.9

[0494] [Table 2] - (% active ingredient) Ingredients Ex. 5 Comp. Ex. 3 Ex. 6 Thickener 0.25 0.25 0.25 Cationic polymer (20% in water) 1 1 1 Surfactants 3.75 3.75 3.75 Oils 6 6 6 Preservatives 0.74 0.74 0.74 Fragrance 0.8 0.8 0.8 Epsilon-poly-L-lysine (4700 g / mol, 25% in water) 1 - 1 HC Blue 16 0.1 0.1 0.1 Alkaline agent - qs pH 8.8 qs pH 9.8 (0.02% ma) Deionized water qs 100 qs 100 qs 100 pH 9.0 8.8 9.8

[0495] (Revealer)

[0496] A developer composition was prepared according to the following protocol. Chelating agents and preservatives were dissolved in hot deionized water at 80 °C to prepare an aqueous phase. In a separate beaker, oils and surfactants were mixed at 80 °C to prepare an oil phase. When the two phases were thoroughly mixed, the oil phase was added to the aqueous phase and emulsified for 10 minutes. When the mixture had reached room temperature, hydrogen peroxide and the pH adjuster were added along with the remaining deionized water.

[0497] The formulation of the developer composition is summarized in Table 3 below. The numerical values ​​of the quantities of ingredients shown in Table 3 are all based on "% by weight" of active raw materials.

[0498] [Table 3] - (% active ingredient) Ingredients Developer Oils 5.2 Hydrogen peroxide (35% in water) 5.85 Surfactants 2.2 Chelating agents 0.21 Preservative 0.035 pH adjuster qs pH 2.2 Deionized water qs 100 pH 2.2

[0499] [Evaluation]

[0500] (Color intensity)

[0501] A strand of 100% Chinese white hair (1 g, 20 cm) was prepared by conventional bleaching of a strand of 100% Chinese hair. The resulting strand of 100% Chinese white hair was washed with a conventional shampoo, rinsed under running water at 40°C, and then dried. The compositions according to each of Examples 1 to 5 and Comparative Examples 1 and 2 were mixed with the developer composition in a mixing weight ratio of 1:1 before application. 3 g of each of the mixed compositions or of the compositions according to Examples 5 and 6 and Comparative Example 3 were applied to a strand of 100% Chinese white hair with a spatula at room temperature. After 15 minutes, the strands were turned over and left for a further 15 minutes. Finally, the strands The strands were rinsed with tap water at 40°C, washed with a standard shampoo, and rinsed again with tap water at 40°C before being dried. The color difference of the strand before and after the coloring process was measured by measuring the colorimetric values ​​(L*, a*, b*, brightness / green-red / blue-yellow) using a Konica Minolta CM-3600A spectrophotometer. The AE* values ​​(between the strand before and after the coloring process under the AL*a*b system) were calculated. The higher the AE* value, the better the color intensity.

[0502] (Color durability)

[0503] Each strand of 100% Chinese white-dyed hair was rinsed with tap water at 40°C over 40 fingers, then washed with a conventional shampoo over 20 fingers. The strands were then rinsed over 30 fingers under tap water at 40°C and gently dried while being combed. This process was repeated 6 more times to simulate a week of typical consumption. The color difference of the dyed strand before and after shampooing for 1 cycle and 7 cycles was measured by measuring the colorimetric values ​​(L* (luminosity), a* (green-red), b* (blue-yellow), and h (hue angle)) using a Konica Minolta CM-3600A spectrophotometer. The AE* values ​​(between the color of the dyed strand and the color of the shampooed strand according to the AL*a*b system) were calculated. The smaller the AE* value, the better the colorfastness. Examples and results are summarized in Table 4.

[0504] [Tables4] AE* (before / after coloring) AE* (before / after 1 shampoo) AE* (before / after 7 shampoos) Ex. 1 54.8 1.44 6.54 Ex. Comp. 1 52.6 3.84 11.2 Ex. 2 73.6 3.91 9.40 Ex. Comp. 2 72.3 4.91 10.3 Ex. 3 55.6 2.30 8.06 Ex. 4 56.2 2.34 8.51 Ex. 5 75.2 6.30 14.9 Ex. Comp. 3 69.8 8.90 17.1 Ex. 6 69.6 2.10 6.40

[0505] Comparing Examples 1, 3 and 4 with Comparative Example 1, although these compositions include the same oxidative tincture, Examples 1, 3 and 4 which include polylysine showed a greater AE* before / after coloring and a smaller AE* before / after one or seven shampoos than comparative example 1.

[0506] Similarly, when comparing Example 2 and Comparative Example 2, although these compositions include the same oxidative dyeing system, Example 2, which includes polylysine, showed a greater AE* before / after coloring and a smaller AE* before / after one or seven shampoos than Comparative Example 2.

[0507] Furthermore, when comparing examples 5 and 6 and comparative example 3, although these compositions include the same direct dyeing system, examples 5 and 6, which include polylysine, showed a greater or comparable AE* before / after coloring and a smaller AE* before / after one or seven shampoos than comparative example 3.

[0508] Furthermore, comparing Examples 5 and 6, although these examples showed a lower AE* before / after one or seven shampoos than comparative Example 3 and thus demonstrated a superior color recovery effect and color durability compared to comparative Example 3, Example 6, which includes a combination of polylysine and an alkaline agent, showed a much lower AE* before / after one or seven shampoos than Example 5, which includes polylysine and no other alkaline agent. Therefore, it can be said that, although Examples 5 and 6 exhibit the inventive effect of the present invention, Example 6 might exhibit better durability than Example 5.

[0509] Therefore, it can be concluded that the compositions according to the present invention can offer an improvement in color intensity and durability of coloring on keratinous fibers.

Claims

Demands

1. Use of (a) polylysine to enhance color intensity and color durability of keratinous fibers colored with (b) at least one coloring agent selected from dyes and pigments, wherein the dyes are selected from oxidative dyes and direct dyes other than iridoid dyes, and (a) polylysine has a weight-average molecular weight in the range of 4,500 g / mol to 25,000 g / mol.

2. Use according to claim 1, wherein (a) polylysine is epsilon-polylysine.

3. Use according to any one of the preceding claims, wherein (a) polylysine has a weight-average molecular weight ranging from 4,500 g / mol to 20,000 g / mol.

4. Use according to any one of the preceding claims, wherein (a) polylysine is in free form.

5. Use according to any one of the preceding claims, wherein the dyes are selected from those in free form.