COMPOSITION FOR KERATIN FIBERS COMPRISING A DIRECT DYE

TECHNICAL FIELD

The present invention relates to a composition for treating keratin fibers, preferably hair.

BACKGROUND ART

In the field of hair cosmetic treatments, leave-on type and rinse-off type hair cosmetics yare important sectors in the hair care category, and consumers use these hair cosmetics to provide hair with smoothness and the like.

JP-A-2009- 132625 discloses a transparent hair cosmetic composition including a specific cationic surfactant, an ethyleneoxide adduct of 1,2-dodecanediol, and water, wherein the amounts of these ingredients are limited to certain ranges.

JP-T-2008-546807 also discloses a transparent or translucent hair cosmetic composition including a thickener, a cationic surfactant and/or a nonionic surfactant, and a

hydrophobicized amidosilicone copolyol, wherein the amounts of these ingredients are limited to certain ranges.

However, they are not intended for coloring hair in particular for the maintenance of hair color while providing hair with smoothness and alignment. In addition, a composition for treating keratin fibers should be stable without causing phase separations.

DISCLOSURE OF INVENTION

An objective of the present invention is to provide a composition for keratin fibers such as hair, which is stable and can color the keratin fibers, in particular for the maintenance of the color of the keratin fibers, while providing the keratin fibers with smoothness and alignment.

The above objective can be achieved by a composition for treating keratin fibers, preferably hair, comprising:

(a) at least one direct dye;

(b) at least one oil;

(c) at least one polyol; and

(d) water,

wherein

the amount of the (a) direct dye(s) in the composition is 0.01% by weight or more relative to the total weight of the composition, and

the amount of the (b) oil(s) in the composition is 20% by weight or more, preferably 30% by weight or more, and more preferably 40% by weight or more, relative to the total weight of the composition,

provided that the (b) oil comprises at least one silicone oil.

The amount of the (b) oil(s) in the composition according to the present invention may be 80% by weight or less, preferably 70% by weight or less, and more preferably 60% by weight or less, relative to the total weight of the composition.

The silicone oil may comprise either at least one volatile silicone oil or at least one non-volatile silicone oil, or both of at least one volatile silicone oil and at least one non-volatile silicone oil. The volatile silicone oil may be selected from cyclic silicones.

The non-volatile silicone oil may be selected from polydimethylsiloxanes and

organo-modified polydimethylsiloxanes. The organo-modified polydimethylsiloxane may be selected from dimethicone copolyols. The amount of the silicone oil(s) in the

composition according to the present invention may range from 1% to 25% by weight, preferably from 3% to 20% by weight, and more preferably from 5% to 15% by weight, relative to the total weight of the composition.

The (c) polyol may be selected from the group consisting of glycerin, ethyleneglycol, polyethyleneglycol, propyleneglycol, dipropyleneglycol, butyleneglycol, pentyleneglycol, hexyleneglycol and mixtures thereof

The amount of the (c) polyol(s) in the composition according to the present invention may range from 1% to 30% by weight, preferably from 5%> to 25%, and more preferably from 10% to 20%, relative to the total weight of the composition.

The amount of the (d) water in the composition according to the present invention may range from 1% to 40% by weight, preferably from 5% to 35% by weight, and more preferably from 10% to 30% by weight, relative to the total weight of the composition.

The weight ratio of the amount of the (d) water/the amount of the (c) polyol(s) may be 3 or less, preferably 2 or less, and more preferably 1 or less. The weight ratio of the amount of the (d) water/the amount of the (c) polyol(s) may be 0.1 or more, more preferably 0.2 or more, and more preferably 0.3 or more.

The composition according to the present invention may further comprise (e) at least one hydrophilic acrylic polymer.

The composition according to the present invention may be a leave-on type or rinse-off type.

The present invention also relates to a cosmetic process for keratin fibers, preferably hair, comprising the step of applying the composition according to the present invention to the keratin fibers.

BEST MODE FOR CARRYING OUT THE INVENTION

After diligent research, the inventors have discovered that it is possible to provide a composition for keratin fibers such as hair, which is stable and can color the keratin fibers, in particular for the maintenance of the color of the keratin fibers, while providing the keratin fibers with smoothness and alignment.

Thus, the present invention mainly relates to a composition for treating keratin fibers, preferably hair, comprising:

(a) at least one direct dye;

(b) at least one oil;

(c) at least one polyol; and

(d) water,

wherein

the amount of the (a) direct dye(s) in the composition is 0.01% by weight or more relative to the total weight of the composition, and

the amount of the (b) oil(s) in the composition is 20% by weight or more, preferably 30% by weight or more, and more preferably 40% by weight or more, relative to the total weight of the composition,

provided that the (b) oil comprises at least one silicone oil.

The composition according to the present invention includes at least one direct dye.

Therefore, the composition according to the present invention can color keratin fibers.

The composition according to the present invention can be used for coloring keratin fibers, in particular for the maintenance of the color of the keratin fibers, while providing the keratin fibers with smoothness and alignment.

The term“maintenance of the color of keratin fibers” means providing keratin fibers with a color which may be the same as or different from the color of the keratin fibers. The color of the keratin fibers may be the original color of the keratin fibers or the artificial or dyed color which has already been provided to the keratin fibers by dyeing the keratin fibers.

If a color which is the same as the color of the keratin fibers is provided by the present invention, the color of the keratin fibers appears maintained as being fresh. Therefore, for example, the fading over time of the dyed color of the keratin fibers can be concealed. On the other hand, if a color which is different from the color of the keratin fibers is provided by the present invention, the color of the keratin fibers can be easily changed or modified. For example, if a complementary color is provided by the present invention, a combination of the provided color and the color of the keratin fibers can result in the decrease of the chroma of the color of the keratin fibers, and therefore, the fading over time of, for example, the dyed color of the keratin fibers can be less noticeable.

The term“smoothness” means that the surface friction on the keratin fibers is reduced.

Therefore, the present invention can make (for example) the following possible: smooth combing, smooth feeling to touch when the keratin fibers are dry, and ease of running fingers through the keratin fibers even if the keratin fibers are wet.

The term“alignment” means that the keratin fibers become less unruly. Therefore, the scope of“alignment” includes volume reduction of the keratin fibers, e.g., the spreading of the keratin fibers is reduced or controlled, and therefore, the styling of the keratin fibers can be well controlled.

The composition according to the present invention can also provide keratin fibers such as hair with additional improved conditioning and manageability cosmetic effects such as anti-frizz effects.

The composition according to the present invention includes at least one silicone oil. In general, the presence of silicone may cause instability issues. However, the composition according to the present invention is stable.

The composition according to the present invention may be transparent and the transparent aspect of the present invention is stable over time; therefore, the composition according to the present invention can be attractive to consumers.

Hereafter, the present invention will be described in a detailed manner.

[Composition]

One aspect of the present invention relates to a composition for treating keratin fibers, preferably hair, comprising:

(a) at least one direct dye;

(b) at least one oil;

(c) at least one polyol; and

(d) water,

wherein

the amount of the (a) direct dye(s) in the composition is 0.01% by weight or more relative to the total weight of the composition, and

the amount of the (b) oil(s) in the composition is 20% by weight or more, preferably 30% by weight or more, and more preferably 40% by weight or more, relative to the total weight of the composition,

provided that the (b) oil comprises at least one silicone oil.

{Direct Dye}

The composition according to the present invention includes at least one direct dye. Two or more direct dyes may be used in combination. Thus, a single type of direct dye or a combination of different types of direct dyes may be used.

A direct dye means a colored substance which does not require the use of an oxidizing agent in order to develop its color.

The direct dye may be a natural direct dye or a synthetic direct dye.

The expression "natural direct dye" is understood to mean any dye or dye precursor that is naturally occurring and is produced by extraction (and optionally purification) from a plant matrix or an animal such as an insect, optionally in the presence of natural compounds such as ash or ammonia.

As natural direct dyes, mention may be made of 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 carthamin), flavonoids (such as rutin, quercetin, catechin, epicatechin, morin, apigenidin, and sandalwood), anthocyans (such as apigeninidin and apigenin), carotenoids, tannins, orceins, santalins and cochineal carmine.

It is also possible to use extracts or decoctions containing natural direct dye(s), in particular henna-based extracts, curcuma longa extract, sorghum leaf-sheath extract, haematoxylon campechianum extract, green tea extract, pine bark extract, cocoa extract, and logwood extract.

It is preferable that the natural direct dye be chosen from the group consisting of

curcuminoids, santalins, chlorophyllin, haematoxylin, haematein, brazilein, brazilin, sorghum, laccaic acid, lawsone, juglone, alizarin, purpurin, carminic acid, kermesic acid, purpurogallin, protocatechaldehyde, indigoids, isatin, spinulosin, apigenin, orcein, betanin, flavonoids, anthocyans, and extracts or decoctions containing these compounds.

Alternatively, the natural direct dyes may be preferably chosen, for example, from

hydroxylated quinones, indigoids, hydroxyflavones, santalins A and B, isatin and its derivatives, and brasilin and its hydroxylated derivative.

The hydroxylated quinones are preferably benzoquinones, naphthoquinones, and mono- or polyhydroxylated anthraquinones which are optionally substituted with groups such as alkyl, alkoxy, alkenyl, chloro, phenyl, hydroxyalkyl and carboxyl.

The naphthoquinones are preferably lawsone, juglone, flaviolin, naphthazarin,

naphthopurpurin, lapachol, plumbagin, chloroplumbagin, droserone, shikonin,

2-hydroxy-3 -methyl- 1 ,4-naphthoquinone, 3, 5 -dihydroxy- 1 ,4-naphthoquinone,

2.5-dihydroxy- 1 ,4-naphthoquinone, 2-methoxy-5-hydroxy- 1 ,4-naphthoquinone and

3-methoxy-5-hydroxy- 1 ,4-naphthoquinone.

The benzoquinones are preferably spinulosin, atromentin, aurentioglyocladin,

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.

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.

The indigoids are preferably indigo, indirubin, isoindigo and Tyrian purple.

The hydroxyflavones are preferably quercetin and morin.

The expression "synthetic direct dye" is understood to mean any dye or dye precursor that is produced by chemical synthesis.

The direct dye can be selected from the group consisting of acidic (anionic) direct dyes, basic (cationic) direct dyes, and neutral (nonionic) direct dyes.

Non-limiting examples of synthetic dyes include (nonionic) neutral, anionic (acidic), and cationic (basic) dyes such as azo, methine, carbonyl, azine, nitro(hetero)aryl types or tri(hetero)arylmethane direct dyes, porphyrins and phthalocyanines, alone or as mixtures.

More particularly, the azo dyes comprise an -N=N- functional group, the two nitrogen atoms of which are not simultaneously involved in a ring. However, it is not ruled out for one of the two nitrogen atoms of the -N=N- sequence to be involved in a ring.

The dyes of the family of the methines are more particularly compounds comprising at least one sequence chosen from >C=C< and -N=C<, the two atoms of which are not

simultaneously involved in a ring. However, it is specified that one of the nitrogen or carbon atoms of the sequences can be involved in a ring. More particularly, the dyes of this family result from compounds of the following types: true methine (comprising one or more of the

above-mentioned -C=C- sequences); azomethine (comprising at least one or more -C=N-sequences) with, for example, the azacarbocyanines and their isomers, the diazacarbocyanines and their isomers, the tetraazacarbocyanines; mono- and diarylmethane; indoamines (or diphenylamines); indophenols; indoanilines.

As the dyes of the family of the carbonyls, mention may be made, for example, of synthetic dyes chosen from acridone, benzoquinone, anthraquinone, naphthoquinone, benzanthrone, anthranthrone, pyranthrone, pyrazolanthrone, pyrimidinoanthrone, flavanthrone, indanthrone, flavone, (iso)violanthrone, isoindolinone, benzimidazolone, isoquinolinone, anthrapyridone, pyrazoloquinazolone, perinone, quinacridone, quinophthalone, naphthalimide, anthra-pyrimidine, diketopyrrolopyrrole or coumarin dyes.

As the dyes of the family of the cyclic azines, mention may be made, in particular, of azine, xanthene, thioxanthene, fluorindine, acridine, (di)oxazine, (di)thiazine or pyronine dyes.

The nitro(hetero)aromatic dyes are more particularly nitrobenzene or nitropyridine direct dyes.

As the dyes of porphyrin or phthalocyanine type, use may be made of cationic or noncationic compounds optionally comprising one or more metals or metal ions, such as, for example, alkali and alkaline earth metals, zinc and silicon.

Mention may be made, as examples of synthetic direct dyes which are particularly suitable, of nitrobenzene dyes, azo, azomethine or methine direct dyes, azacarbocyanines, such as tetraazacarbocyanines (tetraazapentamethines), quinone and in particular anthraquinone, naphthoquinone or benzoquinone direct dyes, or azine, xanthene, triarylmethane, indoamine, phthalocyanine and porphyrin direct dyes, alone or as mixtures. More preferably still, these synthetic direct dyes are chosen from nitrobenzene dyes, azo, azomethine or methine direct dyes and tetraazacarbocyanines (tetraazapentamethines); alone or as mixtures.

Mention may be made, among the azo, azomethine, methine or tetraazapentamethine direct dyes which can be used according to the present invention, of 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.

Thus, mention may very particularly be made of the cationic direct dyes corresponding to the following formulae:

in which:

D represents a nitrogen atom or the -CH group,

Ri and R2, which are identical or different, represent a hydrogen atom; a C1-C4 alkyl radical which can be substituted by a -CN, -OH or -NH2 radical or can form, with a carbon atom of the benzene ring, an optionally oxygen-comprising or nitrogen-comprising heterocycle which can be substituted by one or more C1-C4 alkyl radicals; or a 4'-aminophenyl radical,

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, a C1-C4 alkyl radical, a C1-C4 alkoxy radical or an acetyloxy radical,

X represents an anion, preferably chosen from chloride, methyl sulphate and acetate, A represents a group chosen from the following structures:

in which R4 represents a C1-C4 alkyl radical which can be substituted by a hydroxyl radical;

in which:

R5 represents a hydrogen atom, a C1-C4 alkoxy radical or a halogen atom, such as bromine, chlorine, iodine or fluorine,

R6 represents a hydrogen atom or a C1-C4 alkyl radical or forms, with a carbon atom in the benzene ring, a heterocycle which optionally comprises oxygen and/or is optionally substituted by one or more C1-C4 alkyl groups,

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

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

X represents a cosmetically acceptable anion preferably chosen from chloride, methyl sulphate and acetate,

E represents a group chosen from the following structures:

in which R’ represents a C1-C4 alkyl radical;

when m = 0 and when Di represents a nitrogen atom, then E can also denote a group with the following structure:

in which R’ represents a C1-C4 alkyl radical.

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

The use of some fluorescent dyes may make it possible to obtain, on dark hair, colors which are more visible than with conventional hydrophilic or hydrophobic direct dyes.

Furthermore, these fluorescent dyes, when applied to dark hair, may also make it possible to lighten the hair without damaging it.

As used herein, the term "fluorescent dyes" is understood to mean fluorescent compounds and optical brighteners. In at least one embodiment, the fluorescent dye is soluble in the medium of the composition according to the present invention.

Fluorescent dyes are fluorescent compounds which absorb visible radiation, for example, wavelengths ranging from 400 to 800 nm, and which are capable of re-emitting light in the visible region at a higher wavelength.

According to one embodiment, the fluorescent dyes useful for the present invention re-emit orange-colored fluorescent light. They exhibit, for instance, a maximum re-emission wavelength ranging from 500 to 700 nm.

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, "Fluorescent Dyes" chapter.

The optical brighteners of the present disclosure, also known under the name of "brighteners", or "fluorescent brighteners", or "fluorescent brightening agents" or "FWA", or "fluorescent whitening agents", or "whiteners", or "fluorescent whiteners", are colorless transparent compounds as they do not absorb visible light but only in ultraviolet light (wavelengths ranging from 200 to 400 nanometers) and convert the energy absorbed into fluorescent light of higher wavelength emitted in the visible part of the spectrum, generally in the blue and/or green, that is to say in wavelengths ranging from 400 to 550 nanometers.

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

The fluorescent dyes which can be used in the composition according to the present invention include compounds known from the art, for example, those described in French Patent No. 2 830 189.

Soluble fluorescent compounds that may especially be mentioned 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.

If present, the fluorescent dyes are preferred, more particularly, those re-emitting

orange-colored fluorescent light.

In terms of ionic nature, the direct dye may be selected 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 so-called nitro dyes and HC dyes. Acidic direct dyes have an anionic moiety in their chemical structure. Basic direct dyes have a cationic moiety in their chemical structure. Neutral direct dyes are nonionic.

According to an embodiment, it is preferable that the direct dye be selected from acidic direct dyes.

The anionic direct dyes are commonly known as "acidic direct dyes " for their affinity with alkaline substances (see, for example, "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. 14-p. 39, 2001). Anionic or acid dyes cause less skin irritation as compared to other direct dyes.

The term "anionic direct dyes" means any direct dye comprising in its structure at least one sulfonate group SCV and/or at least one carboxylate group C(0)0 and/or at least one phosphonate group P(=0)0 0 and optionally one or more anionic groups G with G , which may be identical or different, representing an anionic group chosen from alkoxide 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.

The preferred anionic dyes of the formula of the present invention are chosen from acidic nitro direct dyes, acidic azo dyes, acidic azine dyes, acidic triarylmethane dyes, acidic indoamine dyes, acidic anthraquinone dyes, anionic styryl dyes, and indigoids and acidic natural 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 counter ion preferably chosen from alkali and alkaline-earth metals, such as Na+ and K+

Preferred acid dyes may be chosen from:

a) the diaryl anionic azo dyes of formula (II) or (IG):

in which formulae (II) and (II):

•
, , , , 9 and RTo, which may be identical or different, represent a hydrogen atom or a group chosen from:

alkyl;

alkoxy, alkylthio;

hydroxyl, mercapto;

nitro;

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;

(di)(alkyl)amino;

aryl(alkyl)amino optionally substituted with one or more groups chosen from i) nitro; ii) nitroso; iii) (0)2S(0 )-, X+ and iv) alkoxy with X+;

optionally substituted heteroaryl; preferably a benzothiazolyl group;

cycloalkyl; especially cyclohexyl,

Ar-N=N- with Ar representing an optionally substituted aryl group, preferably a phenyl optionally substituted with one or more alkyl,

(0)2 S (O-)-, X+ or phenylamino groups;

or alternatively two contiguous groups R7 with Rs or Rs with R9 or R9 with Rio together form a fused benzo group A’; and RV with R’s or R’s with R’9 or R’9 with R’10 together form a fused benzo group B’; with A’ and B’ optionally substituted with one or more groups chosen from i) nitro; ii) nitroso; iii) (0)2S(0 )-, X+; iv) hydroxyl; v) mercapto; vi) (di)(alkyl)amino;
- and xi) optionally substituted aryl(alkyl)amino; with
and Ar as defined previously;

• W represents a sigma bond s, an oxygen or sulfur atom, or a divalent radical i) -NR- with R as defined previously, or ii) methylene -C(Ra)(Rt>)- with Ra and Rb, which may be identical or different, representing a hydrogen atom or an aryl group, or alternatively Ra and Rb form, together with the carbon atom that bears them, a spiro cycloalkyl; preferably W represents a sulfur atom or Ra and Rb together form a cyclohexyl;

it being understood that formulae (II) and (II') comprise at least one sulfonate
or phosphonate (0)P(O2_) 2X+ or carboxylate (O)C(O-)-, X+ radical on one of the rings A, A', B, B' or C with X+ as defined previously;

As examples of dyes of formula (II), mention may be made of 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 4, 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; and as examples of dyes of formula (II), mention may be made of Acid Red 111, Acid Red 134, Acid yellow 38;

b) the anthraquinone dyes of formulae (III) and (III'):

in which formulae (III) and (III'):

• , which may be identical or different, represent a

hydrogen or halogen atom or a group chosen from:

alkyl;

hydroxyl, mercapto;

alkoxy, alkylthio;

aryloxy or arylthio optionally substituted, preferably substituted with one or more groups chosen from alkyl and (0)2S(0 )-, X+ with X+ as defined previously;

aryl(alkyl)amino optionally substituted with one or more groups chosen from alkyl and (0)2S(0 )-, X+ with X+ as defined previously;

(di)(alkyl)amino;

(di)(hydroxyalkyl)amino;

(0)2S(0 )-, X+ with X+ as defined previously;

• Z’ represents a hydrogen atom or the group NR28R29 with R28 and R29, which may be identical or different, representing a hydrogen atom or a group chosen from:

alkyl;

polyhydroxyalkyl such as hydroxy ethyl;

aryl optionally substituted with one or more groups, particularly i) alkyl such as methyl, n-dodecyl,
+ with X+ as defined previously;
and X” as defined previously, preferably R° represents an alkyl group; cycloakyl; especially cyclohexyl;

• Z represents a group chosen from hydroxyl and NR’ with and which

may be identical or different, representing the same atoms or groups as

as defined previously;
it being understood that formulae (III) and (III') comprise at least one sulfonate group (0)2S(0 )-, X+ with X+ as defined previously;

As examples of dyes of formula (III), mention may be made of Acid Blue 25, Acid Blue 43, Acid Blue 62, Acid Blue 78, Acid Blue 129, Acid Blue 138, Acid Blue 140, Acid Blue 251, Acid Green 25, Acid Green 41, Acid Violet 42, Acid Violet 43, Mordant Red 3; EXT Violet 2, and as examples of dyes of formula (III'), mention may be made of Acid Black 48;

and

g) the quinoline-based dyes of formula (IV):

in which formula (IV):

• R.61 represents a hydrogen or halogen atom or an alkyl group;

• R62, R.63 and R64, which may be identical or different, represent a hydrogen atom or the group
with X+ as defined previously;

• or alternatively R6i with R62, or R6i with R64, together form a benzo group optionally substituted with one or more of the groups (0)2S(0 )-, X+ with X+ as defined previously;

• G represents an oxygen or sulfur atom or the group NRe with Re representing a

hydrogen atom or an alkyl group; particularly G represents an oxygen atom;

it being understood that formula (IV) comprises at least one sulfonate group
with X+ as defined previously;

As examples of the dyes of formula (IV), mention may be made of Acid Yellow 2, Acid Yellow 3 and Acid Yellow 5.

It is preferable that the acidic direct dye be selected from the group consisting of Acid Orange 4, Ext. Violet 2, Acid Yellow 5 and Acid Black 1.

The amount of the direct dye(s) in the composition according to the present invention may be 5% by weight or less, preferably 3% by weight or less, and more preferably 1% by weight or less, relative to the total weight of the composition.

The amount of the direct dye(s) in the composition according to the present invention is 0.01% by weight or more, preferably 0.03% by weight or more, and more preferably from 0.05% by weight or more, relative to the total weight of the composition.

The composition according to the present invention may contain the direct dye(s) in an amount of from 0.01% to 5% by weight, preferably from 0.03% to 3% by weight, and more preferably 0.05% to 1% by weight, relative to the total weight of the composition.

{Oil}

The composition according to the present invention comprises at least one oil. If two or more oils are used, they may be the same or different.

Here,“oil” means a fatty compound or substance which is in the form of a liquid or a paste (non-solid) at room temperature (25°C) under atmospheric pressure (760 mmHg). As the oils, those generally used in cosmetics can be used alone or in combination thereof. These oils may be volatile or non-volatile.

The oil may be a non-polar oil such as a hydrocarbon oil, a silicone oil, or the like; a polar oil such as a plant or animal oil and an ester oil or an ether oil; or a mixture thereof.

The oil may be selected from the group consisting of oils of plant or animal origin, synthetic oils, silicone oils, hydrocarbon oils, and fatty alcohols.

As examples of plant oils, mention may be made of, for example, linseed oil, camellia oil, macadamia nut oil, com oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

CLAIMS

1. A composition for treating keratin fibers, preferably hair, comprising:

(a) at least one direct dye;

(b) at least one oil;

(c) at least one polyol; and

(d) water,

wherein

the amount of the (a) direct dye(s) in the composition is 0.01% by weight or more relative to the total weight of the composition, and

the amount of the (b) oil(s) in the composition is 20% by weight or more, preferably 30% by weight or more, and more preferably 40% by weight or more, relative to the total weight of the composition,

provided that the (b) oil comprises at least one silicone oil.

2. The composition according to Claim 1, wherein the amount of the (b) oil(s) in the composition is 80% by weight or less, preferably 70% by weight or less, and more preferably 60% by weight or less, relative to the total weight of the composition.

3. The composition according to Claim 1 or 2, wherein the silicone oil comprises either at least one volatile silicone oil or at least one non-volatile silicone oil, or both of at least one volatile silicone oil and at least one non-volatile silicone oil.

4. The composition according to Claim 3, wherein the volatile silicone oil is selected from cyclic silicones.

5. The composition according to Claim 3, wherein the non-volatile silicone oil is

selected from polydimethylsiloxanes and organo-modified polydimethylsiloxanes.

6. The composition according to Claim 5, wherein the organo-modified

polydimethylsiloxane is selected from dimethicone copolyols.

7. The composition according to any one of Claims 1 to 6, wherein the amount of the silicone oil(s) in the composition ranges from 1% to 25% by weight, preferably from 3% to 20% by weight, and more preferably from 5% to 15% by weight, relative to the total weight of the composition.

8. The composition according to any one of Claims 1 to 7, wherein the (c) polyol is selected from the group consisting of glycerin, ethyleneglycol, polyethyleneglycol, propyleneglycol, dipropyleneglycol, butyleneglycol, pentyleneglycol, hexyleneglycol and mixtures thereof.

9. The composition according to any one of Claims 1 to 8, wherein the amount of the

(c) polyol(s) in the composition ranges from 1% to 30% by weight, preferably from 5% to 25% by weight, and more preferably from 10% to 20% by weight, relative to the total weight of the composition.

10. The composition according to any one of Claims 1 to 9, wherein the amount of the

(d) water in the composition ranges from 1% to 40% by weight, preferably from 5% to 35% by weight, and more preferably from 10% to 30% by weight, relative to the

total weight of the composition.

11. The composition according to any one of Claims 1 to 10, wherein the weight ratio of the amount of the (d) water/the amount of the (c) polyol(s) is 3 or less, preferably 2 or less, and more preferably 1 or less.

12. The composition according to any one of Claims 1 to 11 , wherein the weight ratio of the amount of the (d) water/the amount of the (c) polyol(s) is 0.1 or more, more preferably 0.2 or more, and more preferably 0.3 or more.

13. The composition according to any one of Claims 1 to 12, further comprising (e) at least one hydrophilic acrylic polymer.

14. The composition according to any one of Claims 1 to 13, wherein the composition is a leave-on type or rinse-off type.

15. A cosmetic process for keratin fibers, preferably hair, comprising the step of applying the composition according to any one of Claims 1 to 14 to the keratin fibers.