Use of at least one phosphoric acid-free oxidizing composition to improve the properties of keratin fibers

Abstract

The present invention relates to the use of at least one oxidizing composition (C2), free of phosphoric acid, comprising one or more chemical oxidizing agents, in an oxidation coloring process for keratin fibers, to improve the cosmetic properties, in particular the shine, and the dyeing properties of said fibers. The invention further relates to a coloring process for keratin fibers, preferably human keratin fibers such as hair, comprising at least the use of at least one oxidizing composition (C2), as defined above, in combination with at least one coloring composition (C1) comprising one or more oxidation dyes.

Description

Title of the invention: Use of at least one phosphoric acid-free oxidizing composition to improve the properties of keratin fibers

[0001] The present invention relates to the use of at least one oxidizing composition (C2), free of phosphoric acid, comprising one or more chemical oxidizing agents, during an oxidation coloring process of keratin fibers, to improve the cosmetic properties, in particular the shine, and the dyeing properties of said fibers.

[0002] The invention further relates to a method for coloring keratin fibers, preferably human keratin fibers, such as hair, comprising at least the implementation of at least one oxidizing composition (C2), as defined above, in combination with at least one coloring composition (Cl) comprising one or more oxidation dyes.

[0003] In the field of coloring, it is known to dye keratin fibers, in particular human keratin fibers such as hair, by means of different techniques from direct dyes for non-permanent colorings or from oxidation dye precursors for permanent colorings.

[0004] Oxidation coloring processes generally employ coloring compositions comprising one or more oxidation dye precursors, in particular oxidation bases such as ortho- or paraphenylenediamines, ortho- or para-aminophenols, or heterocyclic compounds such as pyrazoles, pyrazolinones, or pyrazolopyridines. These oxidation bases are colorless or weakly colored compounds which, when mixed with oxidizing agents, can give rise to colored compounds through an oxidative condensation process.

[0005] It is also possible to vary the shades obtained with such oxidation bases by combining them with color couplers or modifiers. The variety of molecules involved in the oxidation bases and couplers allows for a rich palette of colors.

[0006] At the time of use, the dye compositions are mixed with oxidizing compositions, comprising one or more oxidizing agents, and then applied to the keratin fibers. After a processing time, the keratin fibers are then usually rinsed with water, then washed, once or several times with shampoo, and possibly dried to achieve the desired color.

[0007] However, the implementation of such compositions can lead to a number of disadvantages, in particular to unsatisfactory dyeing and cosmetic performance which may be due to the quality of the water used during such a coloring process, in particular depending on its more or less significant lime content.

[0008] Indeed, during the implementation of oxidation coloring processes, the limescale present in the water can lead to the formation of complexes and / or insoluble salts that can be deposited on keratin fibers, impacting the desired dyeing and cosmetic performance. In particular, such processes can, on the one hand, lead to unsatisfactory coloring, notably by producing colors that lack chromaticity, exhibiting less aesthetic, less homogeneous, duller, and less glossy reflections.

[0009] In other words, oxidation coloring processes can result in unsatisfactory dyeing and cosmetic performance which can be degraded depending on water quality conditions, particularly its hardness.

[0010] In addition, the dyeing and cosmetic performance may vary depending on the water quality conditions, i.e. according to the geographical location of the consumer(s), when the same dyeing composition is used.

[0011] Thus, there is a real need to implement a process for coloring keratin fibers, in particular human keratin fibers such as hair, which does not have the disadvantages mentioned above, i.e. which is capable of leading to improved dyeing and cosmetic performance regardless of water quality conditions, in particular its hardness, in particular its limestone or calcium ion content.

[0012] In particular, there is a real need to implement an oxidation coloring process capable of leading to satisfactory dyeing and cosmetic properties while minimizing the deposition of complexes and / or insoluble salts on keratin fibers.

[0013] The present invention therefore relates in particular to the use of at least one oxidizing composition (C2), free of phosphoric acid, comprising one or more chemical oxidizing agents, during an oxidation coloring process of keratin fibers, preferably human keratin fibers, such as hair, to improve their cosmetic properties in particular shine, smooth feel, natural feel, ease of detangling, improvement of the alignment and visual appearance of the fibers, and their dyeing properties, in particular by leading to more chromatic and more homogeneous colorings.

[0014] The use according to the invention makes it possible to achieve the above objectives, in particular by leading to improved and consistent dyeing and cosmetic performance, that is to say, which depend as little as possible on the quality conditions of the water used, in particular its hardness, and more particularly its mineral salt content, and even more particularly its calcium ion content.

[0015] In other words, the use of an oxidizing composition (C2) according to the invention, during the implementation of an oxidation coloring process, thus makes it possible to reduce the deposits of complexes and / or insoluble mineral salts on the keratin fibers likely to impact the desired dyeing and / or cosmetic performance.

[0016] In other words, the use of an oxidizing composition (C2) according to the invention makes it possible to avoid the deposits of complexes and / or insoluble mineral salts, which may occur during the implementation of an oxidation coloring process, thus ensuring consistently the obtaining of good dyeing and cosmetic properties.

[0017] The use of the oxidizing composition (C2) during such an oxidation coloring process makes it possible in particular to achieve more chromatic colorings, presenting more aesthetically pleasing and more homogeneous shades.

[0018] Furthermore, the use of the oxidizing composition (C2) makes it possible to achieve improved cosmetic properties, in particular in terms of shine, smooth touch, natural touch, ease of detangling, improvement of alignment and visual appearance of the fibers, in particular shine.

[0019] Advantageously, the use of the oxidizing composition (C2) makes it possible to improve the shine of the keratin fibers while leading to improved dyeing performance with more chromatic colors, presenting more aesthetically pleasing and more homogeneous shades.

[0020] Thus the treated keratin fibers are less dull, brighter and have a more chromatic and more homogeneous coloration.

[0021] In other words, the use of the oxidizing composition (C2) according to the invention makes it possible to improve the cosmetic properties, advantageously the shine of the keratin fibers, and the dyeing properties of an oxidation coloring process of said fibers, in particular by giving more chromatic colors, presenting more aesthetic and more homogeneous shades.

[0022] Even more advantageously, the use of an oxidizing composition (C2) according to the invention, during an oxidation coloring process, results in better dyeing and / or cosmetic performance than an oxidizing composition comprising at least one phosphoric acid used in the same oxidation coloring process.

[0023] The present invention also relates to a method for coloring keratin fibers, in particular human keratin fibers such as hair, to improve the cosmetic properties of said keratin fibers, comprising at least the implementation of at least one oxidizing composition (C2), as defined above, in combination with at least one coloring composition (Cl) comprising one or more oxidation dyes.

[0024] Preferably, the coloring process includes at least mixing at least said oxidizing composition (C2) with at least said coloring composition (Cl), and at least applying the composition resulting from said mixture to said keratin fibers.

[0025] The oxidizing composition (C2) also has good usage properties, such as a creamy texture, and is easy and quick to mix with a dyeing composition (Cl).

[0026] The composition, resulting from the mixture of the oxidizing composition (C2) and the dyeing composition (Cl), is thus obtained easily and quickly following a mixture between the oxidizing composition (C2) and a dyeing composition (Cl) and is stable during application.

[0027] Advantageously, the coloring process makes it possible to improve the shine of the keratin fibers and the dyeing properties of the fibers by giving more chromatic colors, presenting more aesthetic and more homogeneous shades with reflections.

[0028] In what follows, and unless otherwise indicated, the bounds of a range of values ​​are included in that range, in particular in the expressions "between" and "ranging from ... to ...".

[0029] Furthermore, the expression "at least one" used in this description is equivalent to the expression "one or more".

[0030] Similarly, the expression "at least" used in this description is equivalent to the expression "greater than or equal to". Use

[0031] As indicated above, the present invention relates to the use of at least one oxidizing composition (C2), free of phosphoric acid, as defined below, during the implementation of an oxidation coloring process of keratin fibers, preferably human keratin fibers, such as hair, to improve the cosmetic and dyeing properties of said fibers.

[0032] In other words, the use of at least one oxidizing composition (C2) according to the invention, during the implementation of an oxidation coloring process of keratin fibers, makes it possible to improve the cosmeticity and the dyeing properties of said fibers.

[0033] For the purposes of this invention, "use of at least one oxidizing composition (C2) during an oxidation coloring process" means an oxidizing composition (C2), as defined below, intended to be implemented sequentially, simultaneously, or to be mixed at the time of use, into a colouring composition (Cl) comprising one or more oxidation dyes.

[0034] Preferably, the oxidizing composition (C2) is intended to be mixed at the time of use with a coloring composition (Cl) comprising one or more oxidation dyes.

[0035] In other words, according to a preferred embodiment, the oxidizing composition (C2) is intended to be mixed extemporaneously with a coloring composition (Cl) comprising one or more oxidation dyes.

[0036] Preferably, the invention relates to the use of at least one oxidizing composition (C2), free of phosphoric acid, comprising one or more chemical oxidizing agents, in a preparation of at least one ready-to-use oxidation coloring composition, to improve the cosmetic properties of keratin fibers, preferably human keratin fibers such as hair.

[0037] For the purposes of this invention, "ready-to-use oxidation colouring composition" means a colouring composition obtained by mixing at least the oxidizing composition (C2), as defined below, and at least the colouring composition (Cl) as defined below.

[0038] In other words, according to a preferred embodiment, the invention relates to the use of at least one oxidizing composition (C2), as defined below, mixed at the time of use with a coloring composition (Cl) comprising one or more oxidation dyes, to improve the cosmetic properties of keratin fibers.

[0039] Preferably, the use of the oxidizing composition (C2) according to the invention makes it possible to improve the shine, natural feel, smooth feel, suppleness, detangling, alignment and visual appearance of the keratin fibers and to obtain more chromatic and more homogeneous colorings.

[0040] More preferably, the use of the oxidizing composition (C2) according to the invention makes it possible to improve the shine of the keratin fibers.

[0041] Advantageously, the invention relates to the use of at least one oxidizing composition (C2) according to the invention, in a preparation of at least one ready-to-use oxidation coloring composition, to improve the shine and dyeing properties of keratin fibers, preferably human keratin fibers such as hair.

[0042] Preferably, the use of the oxidizing composition (C2) according to the invention also makes it possible to improve the cosmetic and dyeing properties of an oxidation coloring process of keratin fibers, in particular by improving their shine and leading to more chromatic and homogeneous colorings. Oxidizing composition (C2)

[0043] The oxidizing composition (C2) used according to the invention is free of phosphoric acid.

[0044] In addition, the oxidizing composition (C2) used according to the invention is free of oxidation dye.

[0045] Chemical oxidizing agent

[0046] For the purposes of this invention, "chemical oxidizing agent" means an oxidizing agent other than oxygen from the air.

[0047] The chemical oxidizing agent(s) (or bleaching agent(s) usable in the present invention may be chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persalts such as perborates and persulfates, in particular sodium persulfate, potassium persulfate and ammonium persulfate, peracids and oxidase enzymes (with their possible cofactors) including peroxidases, 2-electron oxidoreductases such as uricases and 4-electron oxygenases such as laccases, and mixtures thereof.

[0048] More preferably, the chemical oxidizing agent(s) is or are chosen from hydrogen peroxide, persalts, and mixtures thereof, preferably hydrogen peroxide.

[0049] Preferably, the chemical oxidizing agent(s) is or are present in a total content ranging from 0.1 to 50%, more preferably from 0.5 to 20% by weight, even more preferably ranging from 1 to 15% by weight, relative to the total weight of the composition (C2).

[0050] According to a preferred embodiment, the chemical oxidizing agent(s) chosen from hydrogen peroxide, persalts, and mixtures thereof are present in a total content ranging from 0.1 to 50% by weight, more preferably from 0.5 to 20% by weight, more preferably from 1 to 15% by weight, relative to the total weight of the composition (C2).

[0051] The oxidizing composition (C2) may further comprise one or more carboxylic acids different from fatty acids.

[0052] Preferably, the carboxylic acid(s) correspond(s) to the following formula (I) and / or one of the salts: f Q "] p H | >i- U < (0 J HO | O LJ n

[0053] in which: - U represents a monovalent group when n is 0 or a polyvalent group when n is greater than or equal to 1, a hydrocarbon comprising from 1 to 8 atoms of carbon, saturated or unsaturated, cyclic or on-cyclic, aromatic or non-aromatic, possibly interrupted by one or more heteroatoms and / or possibly substituted, in particular by one or more hydroxy groups; preferably U represents a monovalent (Ci-C6)alkyl or polyvalent (Ci-C6)alkylene group possibly substituted by one or more hydroxy and / or amino groups, - n represents an integer between 0 and 10 inclusive, preferably n is between 0 and 5, such that between 0 and 2.

[0054] The carboxylic acid(s) of formula (I) is or are preferably chosen from alpha-hydroxy acids.

[0055] Preferred examples of carboxylic acids of formula (I) include glycolic acid, citric acid, lactic acid, tartaric acid or one of their salts, preferably glycolic acid or lactic acid or one of their salts, better lactic acid, citric acid and / or one of their salts.

[0056] Advantageously, the carboxylic acid of formula (I) is citric acid or one of its salts.

[0057] The salts of acids of formula (I) may be salts of organic or mineral bases or of alkalizing agents as defined above.

[0058] The carboxylic acid(s) is or are present in a total content ranging from 0.01 to 30% by weight, preferably from 0.1 to 20% by weight, more preferably from 0.2 to 15% by weight, relative to the total weight of the oxidizing composition (C2).

[0059] The oxidizing composition (C2) is preferably an aqueous composition.

[0060] In particular, the oxidizing composition (C2) comprises more than 5% by weight of water, preferably more than 10% by weight of water, and even more advantageously more than 20% by weight of water.

[0061] It may also include one or more organic solvents chosen from those listed above; the latter representing more particularly, when present, from 0.1 to 40% by weight relative to the weight of the oxidizing composition, and preferably from 0.2 to 30% by weight, more preferably from 0.3 to 20% by weight, better, from 0.4 to 10% by weight, even better from 0.5 to 5% by weight of the total weight of the composition.

[0062] As previously stated, the oxidizing composition (C2) is free of phosphoric acid.

[0063] Preferably, the oxidizing composition (C2) may further preferably include one or more acidifying agents different from the carboxylic acid(s) of formula (I), as defined above, such as hydrochloric acid or sulfuric acid.

[0064] The oxidizing composition (C2) is preferably aqueous and preferably has a pH less than 7, more preferably between 2 and 5, better between 3 and 4.5.

[0065] Advantageously, the invention relates to the use of at least one oxidizing composition (C2), free of phosphoric acid, comprising citric acid or one of its salts, during the implementation of an oxidation coloring process of keratin fibers, preferably human keratin fibers, such as hair, to improve the cosmetic and dyeing properties of said fibers.

[0066] Further advantageously, the invention relates to the use of at least one oxidizing composition (C2), free of phosphoric acid, comprising citric acid or one of its salts, during the implementation of an oxidation coloring process of keratin fibers, to improve the brightness and dyeing properties of said keratin fibers, in particular by leading to more chromatic and homogeneous colorings. Coloring process

[0067] As indicated above, the invention also relates to a process for coloring keratin fibers, in particular human keratin fibers such as hair, to improve the cosmetic and dyeing properties of said keratin fibers, comprising at least the implementation of at least one oxidizing composition (C2), as defined above, in combination with at least one coloring composition (Cl) comprising one or more oxidation dyes.

[0068] By "combination" in the present invention means that the oxidizing composition (C2) and the coloring composition (Cl) can be used on the keratin fibers separately, i.e. sequentially, or simultaneously, i.e. at the same time, or be mixed at the time of use, i.e. be mixed extemporaneously, before applying to said fibers the ready-to-use oxidation coloring composition resulting from at least said mixture.

[0069] Preferably, the oxidizing composition (C2) and the coloring composition (Cl) are mixed at the time of use before applying the ready-to-use oxidation coloring composition resulting from at least said mixture to the keratin fibers.

[0070] Preferably, the coloring process according to the invention comprises: - at least one mixing step of at least the oxidizing composition (C2), as defined above, and at least one coloring composition (Cl) comprising one or more oxidation dyes, to prepare a ready-to-use oxidation coloring composition, - at least one application step of at least the ready-to-use oxidation coloring composition on said keratin fibers.

[0071] The mixing step is preferably carried out at the time of use, just before applying the composition resulting from the mixture to the hair.

[0072] The composition resulting from the mixture of at least the oxidizing composition (C2) and at least the coloring composition (Cl), i.e. the ready-to-use composition, can be used on dry or wet keratin fibers, as well as on all types of fibers, light or dark, natural or colored, permed, bleached or straightened.

[0073] The composition resulting from the mixture preferably has a pH ranging from 8 to 12, preferably from 8.5 to 11 and better from 9 to 10.5.

[0074] According to a particular embodiment of the process of the invention, the fibers are washed before application of the composition resulting from the mixture of the oxidizing composition (C2) and the coloring composition (Cl).

[0075] The application of the composition resulting from the extemporaneous mixing of the oxidizing composition (C2) and the coloring composition (Cl) can be carried out by any conventional means, in particular by means of a comb, a brush, a paintbrush, by hand or by fingers, on the keratin fibers.

[0076] The coloring process is generally carried out at room temperature (between 15 and 25°C).

[0077] The composition according to the invention, resulting from the extemporaneous mixture, can be applied to the keratin fibers for a setting time ranging from 30 to 60 minutes.

[0078] After application of said composition, the keratin fibers may optionally be washed with shampoo and / or rinsed with water.

[0079] Preferably, the coloring process according to the invention comprises: - at least one mixing step of at least one oxidizing composition (C2), free of phosphoric acid, comprising citric acid and / or one of its salts, and at least one coloring composition (Cl) comprising one or more oxidation dyes, to prepare a ready-to-use oxidation coloring composition, - at least one application step of at least the ready-to-use oxidation coloring composition on said keratin fibers.

[0080] Oxidation dyes

[0081] The colouring composition (Cl) according to the invention comprises (i) one or more oxidation dyes.

[0082] Oxidation dyes can be chosen from one or more oxidation bases, optionally associated with one or more couplers.

[0083] Preferably, the oxidation dye(s) comprise one or more oxidation bases.

[0084] Preferably, the colouring composition (Cl) comprises one or more oxidation bases.

[0085] Oxidation bases may be present in the form of salts, solvates and / or solvates of salts.

[0086] The addition salts of the oxidation bases present in the composition according to the invention (Cl) are in particular selected from addition salts with an acid such as hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, methanesulfonates, phosphates and acetates, and addition salts with a base such as sodium, potassium, ammonia, amines or alkanolamines.

[0087] Furthermore, the solvates of the oxidation bases represent more particularly the hydrates of said oxidation bases and / or the association of said oxidation bases with a linear or branched C1 to C4 alcohol such as methanol, ethanol, isopropanol, n-propanol. Preferably, the solvates are hydrates.

[0088] By way of example, the oxidation bases are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases and corresponding addition salts, solvates and / or solvates of salts.

[0089] Among the paraphenylenediamines that can be mentioned, examples include para-phenylenediamine, para-toluenediamine, 2-chloro-para-phenylenediamine, 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-3-methylaniline, N,N-bis([3-hydroxyethyl)-para-phenylenediamine, 4-N,N-bis([3-hydroxyethyl)amino-2-methylaniline, 4-N,N-bis(B-hydroxyethyl)amino-2-chloroaniline, 2-[3-hydroxyethyl-para-phenylenediamine, 2-methoxymethyl-para-phenylenediamine, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N-([3-hydroxypropyl)-para-phenylenediamine, 2-(γ-hydroxypropyl)-para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N,N-dimethyl-3-methyl-para-phenylenediamine,N-ethyl-N-([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-[3-acetylaminoethyloxy-para-phenylenediamine, N-([3-methoxyethyl)-para-phenylenediamine, 4-aminophenylpyrrolidine, 2-thienyl-para-phenylenediamine, 2-[3-, hydroxyethylamino-5-aminotoluene and 3-hydroxy-l-(4'-aminophenyl)pyrrolidine and addition salts, solvates and / or solvates of their salts.

[0090] Among the aforementioned para-phenylenediamines, para-phenylenediamine, para-toluenediamine, 2-isopropyl-para-phenylenediamine, 2-[3-hydroxyethyl-para-phenylenediamine, 2-(γ-hydroxypropyl)-para-phenylenediamine, 2-methoxymethyl-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 2-P-acetylaminoethyloxy-para-phenylenediamine and the corresponding addition salts, solvates and / or solvates of their salts.

[0091] Among the bis(phenyl)alkylenediamines that can be mentioned, examples include N,N'-bis([3-hydroxyethyl)-N,N'-bis(4'-aminophenyl)-1,3-diaminopropanol, N,N'-bis([3-hydroxyethyl)-N,N'-bis(4'-aminophenyl)ethylenediamine, N,N'-bis(4-aminophenyl)tetramethylenediamine, N,N'-bis([3-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, and 1,8-bis(2,5-diaminophenoxy)-3,6-dioxaoctane and addition salts corresponding, the solvates and solvates of the salts.

[0092] Among the para-aminophenols that are mentioned, we find for example para-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-chlorophenol, 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 4-amino-2-fluorophenol and addition salts, solvates and solvates of salts.

[0093] Among the ortho-aminophenols that can be mentioned, we find for example 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol and 5-acetamido-2-aminophenol and the corresponding addition salts, solvates and solvates of the salts.

[0094] Among the heterocyclic bases that can be mentioned, we find for example the derivatives of pyridine, pyrimidine and pyrazole.

[0095] Among the pyridine derivatives that can be mentioned are the compounds for example described in patents GB 1 026 978 and GB 1 153 196, for example 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3-aminopyridine and 3,4-diaminopyridine and the corresponding addition salts, solvates and solvates of the salts.

[0096] Other pyridine oxidation bases that are useful in the present invention are the 3-aminopyrazolo[l,5-a]pyridine oxidation bases or the corresponding addition salts described, for example, in patent application FR 2 801 308. Examples that can be mentioned include pyrazolo[l,5-a]pyrid-3-ylamine, 2-acetylaminopyrazolo[l,5-a]pyrid-3-ylamine, 2-morpholin-4-ylpyrazolo[l,5-a]pyrid-3-ylamine, 3-aminopyrazolo[l,5-a]pyridine-2-carboxylic acid, 2-methoxypyrazolo[l,5-a]pyrid-3-ylamine, (3-aminopyrazolo[l,5-a]pyrid-7-yl)methanol, 2-(3-aminopyrazolo[l,5-a]pyrid-5-yl)ethanol, 2-(3-aminopyrazolo[l,5-a]pyrid-7-yl)ethanol, (3-aminopyrazolo[l,5-a]pyrid-2-yl)methanol, 3,6-diaminopyrazolo[l,5-a]pyridine, 3,4-diaminopyrazolo[l,5-a]pyridine, pyrazolo[l,5-a]pyridine-3,7-diamine, 7-morpholin-4-ylpyrazolo[l,5-a]pyrid-3-ylamine, pyrazolo[l,5-a]pyridine-3,5-diamine, 5-morpholin-4-ylpyrazolo[l,5-a]pyrid-3-ylamine, 2-[(3-aminopyrazolo[l,5-a]pyrid-5-yl)(2-hydroxyethyl)-amino]ethanol, 2-[(3-aminopyrazolo[l,5-a]pyrid-7-yl) (2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[l,5-a]pyridin-5-ol, 3-aminopyrazolo[l,5-a]pyridin-4-ol, 3-aminopyrazolo[l,5-a]pyridin-6-ol,3-aminopyrazolo[1,5-a]pyridin-7-ol, 2-[3-hydroxyethoxy-3-aminopyrazolo[1,5-a]pyridine; 2-(4-dimethylpiperazinium-l-yl)-3-aminopyrazolo[l,5-a]pyridine; and the corresponding addition salts, solvates and solvates of the salts.

[0097] More particularly, the oxidation bases that are useful in the present invention are chosen from among the 3 aminopyrazolo-[1,5 a]-pyridines and preferably substituted at carbon atom 2 by: a) a (di)(Cl-C6)(alkyl)amino group, said alkyl group being able to be substituted by at least one hydroxy, amino, imidazolium group; b) a heterocycloalkyl group containing 5 to 7 members and 1 to 3 heteroatoms, possibly cationic, possibly substituted by one or more (Cl-C6)alkyl groups, such as a di(Cl-C4)alkylpiperazinium group; or c) a (Cl-C6)alkoxy group possibly substituted by one or more hydroxy groups such as a [3-hydroxyalkoxy] group and the corresponding addition salts, solvates and solvates of the salts.

[0098] Among the pyrimidine derivatives that may be mentioned are the compounds described, for example, in patents DE 2359399; JP 88-169571; JP 05-63124; EP 0770375 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 their addition salts, the solvates and solvates of the salts and their tautomeric forms, where a tautomeric equilibrium exists.

[0099] Among the pyrazole derivatives that can be mentioned are the compounds described in patents DE 3843892, DE 4133957 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, 4,5-diamino-l-([3-hydroxyethyl)pyrazole, 3,4- diaminopyrazole, 4,5-diamino-l-(4'-chlorobenzyl)pyrazole, 4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-methyl-l-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino-l,3-dimethyl-5-hydrazinopyrazole, 1-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-ethyl-3-methylpyrazole, the 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-1-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-triaminopyrazole, 3,5-diamino-l-methyl-4-methylaminopyrazole, 3,5-diamino-4-((3-hydroxyethyl)amino-l-methylpyrazole and the corresponding addition salts,solvates and / or solvates of salts. 4,5-diamino-1-(3-methoxyethyl)pyrazole can also be used.

[0100] A 4,5-diaminopyrazole shall preferably be used and even more preferably 4,5-diamino-l-(3-hydroxyethyl)pyrazole and / or a corresponding salt, solvated and / or salt solvated.

[0101] Pyrazole derivatives that may also be mentioned include diamino-N,N-dihydropyrazolopyrazolones and in particular those described in patent application FR-A-2 886 136, such as the following compounds and their corresponding addition salts: 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1H,2-a]pyrazol-1-one, 2-amino-3-ethylamino-6,7-dihydro-1H,5H-pyrazolo[1H,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazolo[1H,2-a]pyrazol-1-one, 2-amino-3-(pyrrolidin-l-yl)-6,7-dihydro-lH,5H-pyrazolo[l,2-a]pyrazol-l-one, 4,5-diamino-1,2-dimethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-diethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-di-(2-hydroxyethyl)-1,2-dihydropyrazol-3-one, 2-amino-3-(2-hydroxyethyl)amino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-dimethylamino-6,7-dihydro-lH,5H-pyrazolo[l,2-a]pyrazol-l-one, 2,3-diamino-5,6,7,8-tetrahydro-lH,6H-pyridazino[l,2-a]pyrazol-l-one, 4-amino-l,2-Diethyl-5-(pyrrolidin-l-yl)-l,2-dihydropyrazol-3-one, 4-amino-5-(3-dimethylaminopyrrolidin-1-yl)-1,2-diethyl-1,2-dihydropyrazol-3-one, 2,3-diamino-6-hydroxy-6,7-dihydro-lH,5H-pyrazolo[l,2-a]pyrazol-l-one, their salts, their solvates and / or solvates of their salts.

[0102] Preferably, 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and / or a corresponding salt, solvated and / or salt-solvated, will be used.

[0103] Preferably, 4,5-diamino-l-(3-hydroxyethyl)pyrazole and / or 2,3-diamino-6,7-dihydro-lH,5H-pyrazolo[l,2-a]pyrazol-l-one and / or 2-[3- hydroxyethoxy-3-amino-pyrazolo[l,5-a]pyridine and / or a corresponding salt, solvated and / or salt solvated as heterocyclic bases.

[0104] Preferably, the oxidation base(s) are chosen from among para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and the corresponding addition salts, their solvates and / or the solvates of their salts and their mixtures; more preferably from 2-methoxymethyl-para-phenylenediamine, 2-[3-hydroxyethyl-para-phenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, and their addition salts, their solvates and / or the solvates of their salts and their mixtures.

[0105] When the composition (Cl) comprises at least one oxidation base, preferably the oxidation base(s) is / are present in a total content of 0.001 to 20% by weight, preferably 0.005 to 15% by weight, more preferably 0.01 to 10% by weight, better 0.05 to 5%, even better 0.1 to 3% by weight, relative to the weight of the composition (Cl).

[0106] According to a preferred embodiment, when the composition (Cl) comprises at least one oxidation base selected from 2-methoxymethyl-para-phenylenediamine, 2-[3-hydroxyethyl-para-phenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, their addition salts, their solvates and / or the solvates of their salts and mixtures thereof, this (they) is (are) present in a total content of 0.001 to 20% by weight, preferably 0.005 to 15% by weight, more preferably 0.01 to 10% by weight, better 0.05 to 5%, even better 0.1 to 3% by weight, relative to the total weight of the composition.

[0107] In a particular embodiment, the composition (Cl) is free of oxidation bases selected from paraphenylenediamine, paratoluenediamine, their addition salts, their solvates, and the solvates of their salts.

[0108] The oxidation dye(s) can also be chosen from one or more couplers, which can be chosen from the couplers conventionally used for staining keratin fibers.

[0109] Preferably, the composition (Cl) according to the invention comprises one or more couplers.

[0110] Among the useful couplers according to the invention, we can in particular mention metaphenylenediamines, meta-aminophenols, meta-diphenols, naphthalene-based coupling agents and heterocyclic coupling agents as well as the corresponding addition salts, solvates and solvates of their salts.

[0111] Examples include 6-hydroxybenzomorpholine, hydroxyethyl-3,4-methylenedioxyaniline, 2-amino-5-ethylphenol, 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, and 2-amino-4-(β-hydroxyethylamino)-1- methoxybenzene, 1,3-diaminobenzene, l,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline, 3-ureido-l-dimethylaminobenzene, sesamol, α-naphtol, 2-methyl-l-naphtol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine, 3,5-diamino-2,6-dimethoxypyridine, 2,6-bis(β-hydroxyethylamino)toluene, 6-hydroxyindoline, 2,6-dihydroxy-4-methylpyridine, lH-3-methylpyrazol-5-one, l-phenyl-3-methylpyrazol-5-one, the 2,6-dimethylpyrazolo[l,5-b]-l,2,4-triazole, 2,6-dimethyl[3,2-c]-l,2,4-triazole and 6-methylpyrazolo[l,5-a]benzimidazole, 2-methyl-5-aminophenol, 5-N-(B-hydroxyethyl)amino-2-methylphenol, 3-aminophenol, 3-amino-2-chloro-6-methylphenol, the corresponding addition salts, solvates, solvates of the salts and the corresponding mixtures.

[0112] Preferably the coupler(s) is or are chosen from: 6-hydroxybenzomorpholine, its addition salts, its solvates and / or the solvates of its salts, hydroxyethyl-3-4-methylenedioxyaniline, its addition salts, its solvates and / or the solvates of its salts, 2-amino 5-ethylphenol, its addition salts, its solvates and / or the solvates of its salts and mixtures thereof.

[0113] In general, the addition salts of the couplers that can be used in the context of the invention are in particular chosen from addition salts with an acid, such as hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates and addition salts with a base such as sodium hydroxide, potassium hydroxide, ammonia, amines or alkanolamines.

[0114] Furthermore, the solvates more particularly represent the hydrates of these couplers and / or the association of these couplers with a linear or branched alcohol in the C4 to C5 range, such as methanol, ethanol, isopropanol, n-propanol. Preferably, the solvates are hydrates.

[0115] According to a particular embodiment, the composition (Cl) is free of oxidation couplers selected from resorcinol, 2-methyl resorcinol, 4-chloro resorcinol, their addition salts, their solvates, and the solvates of their salts.

[0116] When the composition includes one or more oxidation couplers, the total content of the coupler(s) present in the composition according to the invention varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight, even better from 0.1 to 3% by weight relative to the total weight of the composition (Cl).

[0117] When present, the total content of the couplers selected from 6-hydroxybenzomorpholine, hydroxyethyl-3,4-methylenedioxyaniline, 2-amino 5-ethylphenol, and their addition salts, their solvates and / or the solvates of their salts, preferably varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight, even better from 0.1 to 3% by weight relative to the total weight of the composition (Cl).

[0118] When present, the total content of the couplers selected from 6-hydroxybenzomorpholine, its addition salts, its solvates and / or the solvates of its salts and their addition salts, their solvates and / or the solvates of their salts varies preferably from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight, even better from 0.1 to 3% by weight relative to the total weight of the composition (Cl).

[0119] When present, the total content of the couplers selected from hydroxyethyl-3,4-methylenedioxyaniline, its addition salts, its solvates and / or the solvates of its salts and their addition salts, their solvates and / or the solvates of their salts varies preferably from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight, even better from 0.1 to 3% by weight relative to the total weight of the composition (Cl).

[0120] When present, the total content of the couplers selected from 2-amino 5-ethylphenol, its addition salts, its solvates and / or the solvates of its salts and their addition salts, their solvates and / or the solvates of their salts varies preferably from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight, even better from 0.1 to 3% by weight relative to the total weight of the composition (Cl).

[0121] Preferably, the total content of oxidation dyes varies from 0.001 to 20% by weight, more preferably from 0.005 to 15% by weight, better from 0.01 to 10% by weight, even better from 0.05 to 5% by weight, even better from 0.1 to 3% by weight relative to the total weight of the composition (Cl).

[0122] The colouring composition (Cl) is notably free of chemical oxidizing agent.

[0123] Fatty acid

[0124] The colouring composition (Cl) may further comprise (ii) one or more fatty acids.

[0125] By "fatty acids" is meant a long-chain carboxylic acid comprising at least 6 carbon atoms, in particular from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. The fatty acids according to the invention preferably comprise from 10 to 30 carbon atoms and more preferably from 14 to 22 carbon atoms. They may optionally be hydroxylated.

[0126] Preferably, the fatty acids present in the composition according to the invention comprise at least one carboxylic acid group and an alkyl chain, linear or branched, saturated or unsaturated, in particular unsaturated, comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms, more preferably from 10 to 30 carbon atoms and better from 14 to 22 carbon atoms.

[0127] Preferably, the fatty acids comprise at least one carboxylic acid group and an alkyl chain, linear or branched, saturated or unsaturated, in particular unsaturated, comprising from 10 to 30 carbon atoms, in particular from 14 to 22 carbon atoms.

[0128] Preferably, the fatty acids comprise at least one carboxylic acid group and one unsaturated linear or branched alkyl chain comprising 14 to 22 carbon atoms.

[0129] More preferably, the fatty acids according to the invention are chosen from compounds of RC(O)OH structure in which R represents an alkyl group, linear or branched, saturated or unsaturated, comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms, better from 14 to 20 carbon atoms.

[0130] For the purposes of the present invention, the fatty acids present in the composition (Cl) are neither oxyalkylated nor glycerolized.

[0131] Fatty acids can be selected from solid fatty acids, liquid fatty acids and mixtures thereof.

[0132] For the purposes of this invention, "solid fatty acid" means a fatty acid having a melting point above 25°C, preferably above or equal to 28°C, more preferably above or equal to 30°C at atmospheric pressure (1.013.105 Pa).

[0133] The solid fatty acids used in the present invention are in particular selected from myristic acid, cetyl acid, arachidic acid, stearic acid, lauric acid, behenic acid, 12-hydroxystearic acid and mixtures thereof.

[0134] In a particularly preferred manner, the solid fatty acid(s) are chosen from lauric acid, myristic acid, cetyl acid, stearic acid.

[0135] For the purposes of this invention, "liquid fatty acid" means a fatty acid having a melting point of less than or equal to 25°C, preferably less than or equal to 20°C at atmospheric pressure (1.013.105 Pa).

[0136] The liquid fatty acid(s) according to the invention may be chosen from oleic acid, linoleic acid, linolenic acid, arachidonic acid, isostearic acid, isopalmitic acid, and mixtures thereof, preferably oleic acid

[0137] Preferably, the fatty acids present in the composition according to the invention (Cl) are liquid fatty acids, in particular chosen from fatty acids comprising at least one carboxylic acid group and an unsaturated linear or branched alkyl chain comprising 10 to 30 carbon atoms, in particular 14 to 22 carbon atoms.

[0138] Preferably, the fatty acids present in the composition (Cl) are liquid fatty acids, in particular chosen from oleic acid, linoleic acid, linolenic acid and mixtures thereof, more preferably oleic acid.

[0139] Preferably, the fatty acids present in the composition (Cl) are myristic, lauric, oleic, linoleic, linolenic, isocetyl, isostearyl, cetyl, stearylic acids, and mixtures thereof, preferably oleic acid.

[0140] Preferably, the fatty acid(s) are chosen from myristic acid, cetyl acid, stearic acid, oleic acid, and mixtures thereof, preferably oleic acid.

[0141] Advantageously, the fatty acid(s) are present in a total content ranging from 0.1 to 15% by weight, preferably from 0.5 to 10%, preferably from 1 to 5% by weight relative to the total weight of the composition (Cl).

[0142] In a particular embodiment, advantageously, the liquid fatty acid(s) are present in a total content ranging from 0.1 to 15% by weight, preferably from 0.5 to 10%, preferably from 1 to 5% by weight relative to the total weight of the composition (Cl).

[0143] Alkaline agent

[0144] The colouring composition (Cl) may comprise (iii) one or more alkali agents.

[0145] The alkali agent(s) may be mineral, organic or hybrid alkali agents.

[0146] For the purposes of the present invention, the terms "alkaline agent" and "alkalinizing agents" are used interchangeably.

[0147] The mineral alkalizing agent(s) are preferably chosen among ammonia, alkali carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate, alkali or alkaline earth metal phosphates such as sodium phosphates or potassium phosphates, sodium or potassium hydroxides, alkali or alkaline earth metal silicates or metasilicates such as sodium metasilicate and mixtures thereof.

[0148] The organic alkalizing agent(s) are preferably chosen from alkanolamines, amino acids, organic amines other than alkanolamines, oxyethylenated and / or oxypropylenated ethylenediamines, 1,3-diaminopropane, spermine, spermidine and mixtures thereof.

[0149] By alkanolamine is meant an organic amine comprising a primary, secondary or tertiary amine function, and one or more linear or branched alkyl groups, in CrC8 bearing one or more hydroxyl radicals.

[0150] Organic amines selected from among alkanolamines such as mono-, di- or tri-alkanolamines, comprising one to three hydroxyalkyl radicals, identical or not, in C1-C4, are particularly suitable for carrying out the invention.

[0151] In particular, the alkanolamine(s) are selected from monoethanolamine (MEA), diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, N,N-dimethylethanolamine, 2-amino-2-methyl-l-propanol, triisopropanolamine, 2-amino-2-methyl-l,3-propanediol, 3-amino-l,2-propanediol, 3-dimethylamino-l,2-propanediol, tris-hydroxymethylamino-methane and mixtures thereof.

[0152] Advantageously, the amino acids are basic amino acids comprising an additional amine function. Such basic amino acids are preferably chosen from histidine, lysine, arginine, omithine, and citrulline.

[0153] The organic amine can also be chosen from among heterocyclic organic amines. In particular, in addition to histidine already mentioned among amino acids, examples include pyridine, piperidine, imidazole, triazole, tetrazole, and benzimidazole. The organic amine can also be chosen from amino acid dipeptides. Examples of amino acid dipeptides usable in the present invention include carnosine, anserine, and balenine. The organic amine can also be chosen from compounds containing a guanidine functional group. Examples of amines of this type other than arginine that can be used in the present invention include creatine, creatinine, 1,1-dimethylguanidine, 1,1-diethylguanidine, glycocyamine, metformin, agmatine, n-amidinoalanine, 3-guanidinopropionic acid, 4-guanidinobutyric acid and 2-([amino(imino)methyl]amino)ethane-1-sulfonic acid.)

[0154] In particular, guanidine carbonate or monoethanolamine hydrochloride can be used as hybrid compounds.

[0155] The useful alkali agent(s) according to the invention is / are preferably chosen from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine; ammonia; carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate; alkali or alkaline earth metal silicates or metasilicates such as sodium metasilicate and mixtures thereof, more preferably from ammonia and alkanolamines, better from alkanolamines, and even better from monoethanolamine.

[0156] Preferably, the alkalizing agent(s) is or are organic.

[0157] Preferably, the alkalizing agents are chosen from among the alkanolamines such as monoethanolamine, diethanolamine, triethanolamine.

[0158] In a particular embodiment, the composition (Cl) according to the invention is free of ammonia.

[0159] The total content of the alkali agent(s) is greater than or equal to 5% by weight relative to the total weight of the composition (Cl).

[0160] Preferably, the total content of alkali agents is greater than or equal to 8% by weight, more preferably greater than or equal to 10% by weight, relative to the total weight of the composition (Cl).

[0161] Preferably, the total content of alkali agents varies from 5 to 40% by weight, more preferably from 6 to 30% by weight, better from 8 to 20% by weight, even better from 10 to 15% by weight relative to the total weight of the composition (Cl).

[0162] In a preferred embodiment, the total content of the alkaline agent(s) selected from the alkanolamines, preferably monoethanolamine, is preferably greater than or equal to 5% by weight, preferably from 6 to 40% by weight, more preferably from 7 to 30% by weight, more preferably from 8 to 20% by weight, better from 10 to 15% by weight, relative to the total weight of the composition (Cl).

[0163] According to one embodiment, the pH of the composition (Cl) is between 8 and 13; preferably between 9.0 and 12, better between 10 and 11.

[0164] Preferably, the composition (Cl) comprises at least one alkaline agent selected from the alkanolamines and has a pH between 8 and 13, preferably between 9.0 and 12, better between 10 and 11.

[0165] The pH of the composition (Cl) can be adjusted to the desired value by means of acidic or alkaline agent(s) commonly used in dyeing keratin fibers such as those described above, or by means of buffer systems known to those skilled in the art.

[0166] Fatty alcohols The colouring composition (Cl) according to the invention may comprise one or more fatty alcohols.

[0167] For the purposes of this invention, "fatty alcohol" means a long-chain aliphatic alcohol comprising 6 to 40 carbon atoms, preferably 8 to 30 carbon atoms, and comprising at least one hydroxyl group OH.

[0168] For the purposes of the present invention, fatty alcohols are neither oxyalkylated nor glycerolated.

[0169] The fatty alcohols according to the invention can be saturated or unsaturated, linear or branched, and comprise from 8 to 40 carbon atoms.

[0170] More preferably, the fatty alcohols according to the invention are chosen from compounds of structure R-OH with R designating a saturated or unsaturated alkyl group, linear or branched, optionally substituted by one or more hydroxy groups, comprising from 8 to 40, better from 10 to 30, or even from 12 to 24 atoms, even better from 14 to 22 carbon atoms.

[0171] Fatty alcohols may be selected from liquid fatty alcohols, solid fatty alcohols and mixtures thereof.

[0172] For the purposes of this invention, "solid fatty alcohol" means a fatty alcohol having a melting point above 25 °C, preferably above or equal to 28 °C, more preferably above or equal to 30 °C at atmospheric pressure (1.013.105 Pa).

[0173] Solid fatty alcohols can be selected from saturated or unsaturated, linear or branched solid fatty alcohols, comprising 8 to 40 carbon atoms.

[0174] The solid fatty alcohols that can be used according to the invention are preferably chosen from compounds of structure R-OH with R designating a linear saturated alkyl group, optionally substituted by one or more hydroxy groups, comprising from 8 to 40, better from 10 to 30, or even from 12 to 24 atoms, even better from 14 to 22 carbon atoms.

[0175] The solid fatty alcohols that may be used may be selected from, alone or in mixtures: - lauryl alcohol (or 1-dodecanol); - myristic or myristyl alcohol (or 1-tetradecanol); - cetyl alcohol (or 1-hexadecanol); - stearyl alcohol (or 1-octadecanol); - arachidyl alcohol (or 1-eicosanol); - behenyl alcohol (or 1-docosanol); - lignoceryl alcohol (or 1-tetracosanol); - ceryl alcohol (or 1-hexacosanol); - montanyl alcohol (or 1-octacosanol); - myricyl alcohol (or 1-triacontanol). Among the mixtures of solid fatty alcohols, cetyl alcohol, stearyl alcohol and / or mixtures thereof such as cetearyl alcohol are preferred.

[0176] For the purposes of this invention, "liquid fatty alcohol" means a fatty alcohol having a melting point of less than or equal to 25 °C, preferably less than or equal to 20 °C at atmospheric pressure (1.013.105 Pa).

[0177] The liquid fatty alcohols, which may be used according to the invention, are preferably chosen from compounds of structure R-OH with R designating a saturated or unsaturated alkyl group, linear or branched, preferably unsaturated and / or branched, optionally substituted by one or more hydroxy groups, comprising from 8 to 40, better from 10 to 30, or even from 12 to 24 atoms, even better from 14 to 22 carbon atoms.

[0178] Preferably, the liquid fatty alcohols are chosen from compounds of R-OH structure with R denoting an alkyl group, unsaturated and / or branched, preferably unsaturated, possibly substituted by one or more hydroxyl groups, comprising from 12 to 24, or even better from 14 to 22 carbon atoms.

[0179] The liquid fatty alcohols that may be used may be chosen from, alone or in mixture, oleic alcohol, linoleic alcohol, linolenic alcohol, isocetyl alcohol, isostearyl alcohol, 2-octyl-l-dodecanol, 2-butyl-octanol, 2-hexyl-l-decanol, 2-decyl-l-tetradecanol, 2-tetradecyl-l-cetanol and mixtures thereof, preferably oleic alcohol.

[0180] Preferably, the liquid fatty alcohols chosen are linoleic alcohol, oleic alcohol, linolenic alcohol and their mixtures, preferably oleic alcohol.

[0181] Preferably, the fatty alcohol(s) are chosen from fatty alcohols comprising 14 to 40 carbon atoms, more preferably 14 to 22 carbon atoms, better from cetyl alcohol, stearyl alcohol, cetearyl alcohol, oleic alcohol and mixtures thereof.

[0182] Preferably, the composition (Cl) further comprises one or more fatty alcohols.

[0183] According to a preferred embodiment, the composition (Cl) according to the invention comprises one or more solid fatty alcohols and one or more liquid fatty alcohols, preferably one or more solid fatty alcohols comprising 14 to 40 carbon atoms, more preferably 14 to 22 carbon atoms and one or more liquid fatty alcohols comprising 14 to 40 carbon atoms, more preferably 14 to 22 carbon atoms.

[0184] According to a preferred embodiment, the composition (Cl) according to the invention comprises one or more solid fatty alcohols comprising from 14 to 22 carbon atoms and one or more liquid fatty alcohols comprising from 14 to 22 carbon atoms.

[0185] According to another preferred embodiment, the composition (Cl) according to the invention comprises one or more solid fatty alcohols selected from compounds of structure R-OH with R denoting a linear saturated alkyl group, optionally substituted by one or more hydroxy groups, comprising from 14 to 22 carbon atoms, and one or more liquid fatty alcohols selected from compounds of structure R-OH with R denoting an alkyl group, unsaturated and / or branched, preferably unsaturated, optionally substituted by one or more hydroxy groups, comprising from 14 to 22 carbon atoms.

[0186] Advantageously, the fatty alcohol(s) are present in a total content ranging from 1 to 35% by weight, preferably from 5 to 30% by weight, more preferably from 8 to 25% by weight, and better from 10 to 20% by weight, relative to the total weight of the composition (Cl).

[0187] According to a particular embodiment, advantageously the solid fatty alcohol(s) are present in a total content of 1 to 35% by weight, preferably from 5 to 30% by weight, more preferably 8 to 25% by weight, and better 10 to 20% by weight, relative to the total weight of the composition (Cl).

[0188] According to another particular embodiment, advantageously the liquid fatty alcohol(s) are present in a total content of 0.5 to 15% by weight, more preferably of 1 to 10% by weight, and better of 2 to 5% by weight, relative to the total weight of the composition (Cl).

[0189] Polyol

[0190] The composition (Cl) according to the invention may further comprise one or more polyols.

[0191] For the purposes of this invention, "polyol" means an organic compound consisting of a hydrocarbon chain optionally interrupted by one or more oxygen atoms and bearing at least two free hydroxyl groups (-OH) on different carbon atoms, this compound being able to be cyclic or acyclic, linear or branched, saturated or unsaturated.

[0192] Preferably, the polyols are different from fatty alcohols as defined above.

[0193] More particularly, the polyol(s) comprise from 2 to 30 hydroxy groups, more preferably from 2 to 10 hydroxy groups, more preferably still from 2 to 3 hydroxy groups.

[0194] The polyol(s) are preferably selected from diglycerin, glycerin, propylene glycol, propane-1,3-diol, 1,3-butylene glycol, pentane-1,2-diol, octane-1,2-diol, dipropylene glycol, hexylene glycol, ethylene glycol, polyethylene glycols, sorbitol, sugars such as glucose and mixtures thereof, preferably from glycerin, propane-1,3-diol and mixtures thereof

[0195] Preferably, the composition comprises one or more polyols selected from diglycerin, glycerin, propylene glycol, propane-1,3-diol, 1,3-butylene glycol, pentane-1,2-diol, octane-1,2-diol, dipropylene glycol, hexylene glycol, ethylene glycol, polyethylene glycols, sorbitol, sugars such as glucose and mixtures thereof, preferably from glycerin, propane-1,3-diol, and mixtures thereof.

[0196] Preferably, the composition (Cl) comprises one or more polyols, more preferably chosen from propane-1,3-diol, glycerin and their mixture.

[0197] Even more preferably, the composition (Cl) comprises propane-1,3-diol.

[0198] Advantageously, the polyol(s) are present in a total content greater than or equal to 5% by weight relative to the total weight of the composition (Cl).

[0199] Advantageously, the polyol(s) are present in a total content varying from 1 to 20% by weight, preferably from 3 to 15% by weight relative to the total weight of the composition (Cl).

[0200] Additives

[0201] The composition (Cl) or (C2) may include one or more different additives of the compounds of the invention.

[0202] Among which we can mention cationic, anionic, non-ionic, amphoteric polymers or mixtures thereof, different from those mentioned above, anti-dandruff agents, anti-seborrheic agents, anti-hair loss and / or regrowth agents, vitamins and pro-vitamins including panthenol, sunscreens, mineral or organic pigments, plasticizers, solubilizers, opacifiers or pearlescent agents, antioxidants, perfumes, preservatives.

[0203] Of course, a person skilled in the art will take care to choose this or these possible complementary compounds in such a way that the advantageous properties intrinsically attached to the composition according to the invention are not, or substantially not, altered by the envisaged addition(s).

[0204] The above additives may generally be present in quantities of each of them between 0 and 20% by weight, relative to the total weight of the ready-to-use composition.

[0205] The following examples serve to illustrate the invention without, however, being limiting in nature. Examples

[0206] Example 1

[0207] In the following examples, all quantities are given as mass percentage of active material (AM) relative to the total weight of the composition (unless otherwise stated).

[0208] Coloring compositions

[0209] Compositions A, B, C were prepared from the ingredients whose contents are indicated in the table below (% ma):

[0210] [Tables 1] A. Oleic alcohol 2.7, Cetearyl alcohol 16.3, Tetrasodium glutamate diacetate 0.24, Xanthan gum 0.2, Glycerin 5, Propanediol 5 Oleic acid 2.7 Cetearyl glucoside 0.5 Ethanolamine 12.25 m-aminophenol 0.21 Toluene-2,5-diamine 0.64 Hydroxybenzomorpholine 0.38 Parfum 0.5 N,N-BIS(2-HYDROXYETHYL)-p-PHENYL NEDIAMINE SULFATE 0.04 2,4-DIAMINOPHENOXYETHANOL HCl 0.03 Ascorbic acid 0.25 6-Hydroxyindole 0.05 2-Amino-3-Hydroxypyridine 0.01 Sodium metabisulfite 0.71 HYDROXYETHYL-3,4-METHYLENEDIOX YANILINE HCl 0.11 Water Qs 100

[0211] Oxidizing composition

[0212] [Tables2] BC GLYCERIN 0.5 0.5 Phosphoric acid 0.3 - Citric acid - 0.3 TETRASODIUM ETIDRONATE 0.06 0.06 TRIDECETH-2 CARBOXAMIDE MEA 0.82 0.82 TETRASODIUM PYROPHOSPHATE 0.04 0.04 Cetearyl alcohol 2.28 2.28 Ceteareth-25 0.57 0.57 Sodium salicylate 0.035 0.035 Hydrogen peroxide 6 6 Water Qs 100 Qs 100

[0213] Colour composition A is mixed with oxidizing compositions (B) and (C) in a ratio of 1:1.5.

[0214] Each of the mixtures is applied to moderately sensitized hair strands (SA20), at a rate of 5g of mixture per 1g of hair.

[0215] After a setting time of 30 minutes at room temperature, the strands are rinsed with clear water, and finally, the strands are dried for 2 hours in an oven at 60°C.

[0216]

[0217] The colorimetric measurements were carried out with a KONICA MINOLTA CM-3600A spectrocolorimeter (illuminant D65, angle 10°, specular component included) in the CIELab system.

[0218] Chromaticity is calculated according to the following formula#:# -F(b*)"

[0219]

[0220] The higher the chromaticity value C*, the more the fibre colour is chromatic. a* b* C* (chromaticity) A + C invention 3.01 3.84 4.88 A + B comparison 1.57 0.58 1.67

[0221] Mixing the colour composition (A) with the oxidizing composition (C) free of phosphoric acid, according to the invention, leads to a higher C* value, and therefore to better chromaticity, compared to mixing the colour composition (A) with the oxidizing composition (B) comprising phosphoric acid.

[0222] Furthermore, it is observed that the application of the composition resulting from the mixture between the colouring composition (A) and the oxidizing composition (C) leads to an improvement in the cosmetic properties of the hair, in particular its shine.

[0223] Thus, the use of the oxidizing composition according to the invention during an oxidation coloring process made it possible to improve the chromaticity of the color and the cosmetic properties of the hair, in particular its shine.

Claims

Demands

1. Use of at least one oxidizing composition (C2), free of phosphoric acid, comprising one or more chemical oxidizing agents, during an oxidation coloring process of keratin fibers, preferably human keratin fibers such as hair, to improve the cosmetic and dyeing properties of said fibers.

2. Use according to claim 1 of said oxidizing composition (C2) in the preparation of at least one ready-to-use oxidation coloring composition to enhance the cosmetic and dyeing properties of keratin fibers.

3. Use according to claim 1 or 2, to enhance the shine and dyeing properties of keratin fibers, preferably human keratin fibers such as hair.

4. Use according to any one of the preceding claims, characterized in that the chemical oxidizing agent(s) is or are selected from hydrogen peroxide, urea peroxide, alkali metal bromates, persalts such as perborates and persulfates, peracids and oxidase enzymes (with their possible cofactors), and mixtures thereof; preferably, the chemical oxidizing agent(s) are selected from hydrogen peroxide, persalts, and mixtures thereof; more preferably the chemical oxidizing agent is hydrogen peroxide.

5. Use according to any one of the preceding claims, characterized in that the oxidizing composition (C2) further comprises one or more carboxylic acids corresponding to the following formula (I) and / or one of the salts: r 9s i ph (i) | ho" 0 kv -J in which: - U represents a monovalent group when n is 0 or a polyvalent group when n is greater than or equal to 1, hydrocarbon comprising from 1 to 8 carbon atoms, saturated or unsaturated, cyclic or non-cyclic, aromatic or non-aromatic, optionally interrupted by a or several heteroatoms and / or possibly substituted in particular by one or more hydroxy groups; preferably U represents a monovalent (Ci-C6)alkyl or polyvalent (Ci-C6)alkylene group possibly substituted by one or more hydroxy and / or amino groups, - n represents an integer between 0 and 10 inclusive, preferably n is between 0 and 5, such that between 0 and 2; preferably the carboxylic acid is chosen from glycolic acid, citric acid, lactic acid, tartaric acid or one of their salts, preferably glycolic acid or lactic acid or one of their salts, better lactic acid, citric acid and / or one of their salts.

6. A method for coloring keratin fibers, in particular human keratin fibers such as hair, to improve the cosmetic and dyeing properties of said fibers, comprising at least the implementation of at least one oxidizing composition (C2), as defined according to any one of claims 1, 4 or 5, in combination with at least one coloring composition (Cl) comprising one or more oxidation dyes.

7. A method according to the preceding claim, for improving the shine of keratin fibers, preferably human keratin fibers such as hair.

8. A method according to claim 6 or 7, characterized in that it comprises: - at least one mixing step of at least the oxidizing composition (C2), as defined according to any one of claims 1, 4 or 5, and at least one coloring composition (Cl) comprising one or more oxidation dyes, to prepare a ready-to-use oxidation coloring composition, - at least one application step on said keratin fibers of at least said ready-to-use oxidation coloring composition.

9. A method according to any one of claims 6 to 8, characterized in that the oxidation dye(s) is or are selected from oxidation bases, couplers, and mixtures thereof.

10. A process according to the preceding claim, characterized in that the oxidation base(s) is or are selected from paraphenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and the corresponding addition salts, their solvates and / or the solvates of their salts and mixtures thereof; more preferably from 2-methoxymethyl-para-phenylenediamine, 2-[>-hydroxyethyl-paraphenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, and their addition salts, their solvates and / or the solvates of their salts and mixtures thereof.

11. A method according to any one of claims 6 to 10, characterized in that the colouring composition (Cl) further comprises one or more fatty acids, preferably comprising at least one carboxylic acid and an alkyl chain, linear or branched, saturated or unsaturated, in particular unsaturated, comprising from 10 to 30 carbon atoms, in particular from 14 to 22 carbon atoms.

12. A process according to claim 11, characterized in that the fatty acids are liquid fatty acids, in particular selected from the group consisting of oleic acid, linoleic acid, linolenic acid, arachidonic acid, isostearic acid, isopalmitic acid and mixtures thereof, more preferably oleic acid.

13. A process according to any one of claims 6 to 12, characterized in that the colouring composition (Cl) further comprises one or more alkali agents, preferably selected from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine; ammonia, carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate, alkali or alkaline earth metal silicates or metasilicates such as sodium metasilicate and mixtures thereof, more preferably from ammonia and alkanolamines, better from alkanolamines, better still the alkali agent is monoethanolamine.