KR20070019580A - Composition for dyeing keratin fibres comprising at least one oxidation base and a particular polyoxyethylenated sorbitan ester - Google Patents

Abstract

The present invention relates to a composition for dyeing keratin fibres, such as hair, containing at least one oxidizing base, optionally at least one coupling agent and at least one polyoxyethylenated sorbitan ester having a mole number of ethylene oxide of 10 or less in a suitable medium. It is about.

Such compositions make it possible to maintain particularly strong coloration while at the same time limiting the discomfort that may be experienced on the scalp upon or after application of the dye composition.

Description

COMPOSITION FOR DYEING KERATIN FIBRES COMPRISING AT LEAST ONE OXIDATION BASE AND A PARTICULAR POLYOXYETHYLENATED SORBITAN ESTER}

The present invention relates to a method for dyeing keratin fibers containing at least one oxidized base and certain polyoxyethylenated sorbitan esters.

Keratin fibers and especially human hair are dyed with dye compositions containing oxidative dye precursors, commonly known as oxidizing bases, such as ortho- or para-phenylenediamine, ortho- or para-aminophenol and heterocyclic compounds It is known to do. Such oxidized bases are colorless or lightly colored compounds which, when mixed with oxidation products, can lead to colored compounds through the course of oxidative condensation. The color tone obtained with such an oxidizing base can be modified by addition of a coupling agent or a color modifier, the latter in particular of aromatic meta-diaminobenzenes, meta-aminophenols, meta-diphenols and certain heterocyclic compounds such as Selected from indole and pyridine compounds.

Oxidative dyeing is generally carried out in the presence of an alkali agent which promotes dyeing of keratinous fibers.

Many molecules and coupling agents used as oxidizing bases allow a wide range of colors to be obtained. The "permanent" coloring obtained by such an oxidative dye makes it possible to obtain the desired intensity color tone and exhibits good adhesion to external factors such as light, bad weather, washing, perm, sweat and friction.

However, since oxidative dyeing is carried out in the presence of oxidizing agents and alkalising agents, it sometimes results in discomfort that manifests itself as local stinging and / or burning of the scalp.

It is already known to use dye precursors for coloring or to protect the keratin fibres, in particular with particular polymers carried out. However, this protection is not completely satisfactory: in particular, this can result in less intense staining due to the presence of such polymers.

Furthermore, the use of polyoxyethylenated sorbitan esters in keratin fiber dyeing products is already known. Specifically, document DE 199 23 438 describes the use of polyoxyethylenated sorbitan esters to reduce pigmentation of the scalp during staining.

It is an object of the present invention to provide novel compositions for dyeing keratin fibers such as hair, which makes it possible to limit the discomfort that a user may experience during dyeing.

This object is achieved by the present invention, one subject of which is, in a suitable medium, one or more polyoxyethylenated sorbitan esters having a mole number of one or more oxidizing bases, optionally one coupling agent and ethylene oxide of 10 or less It is a composition for dyeing keratin fibers, such as hair, containing.

Such compositions make it possible to maintain particularly strong coloration while at the same time limiting the discomfort that may be experienced on the scalp upon or after application of the dye composition.

Oxidizing bases useful in the compositions of the present invention are oxidizing bases commonly used for oxidative staining.

The oxidizing base is selected from, for example, para-phenylenediamine, bis (phenyl) alkylenediamine, para-aminophenol, bis-para-aminophenol, orthoaminophenol and heterocyclic base, and addition salts thereof. Can be.

Among the para-phenylenediamines that may be mentioned, para-phenylenediamine, para-tolylenediamine, 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 (β-hydroxyethyl) -para -Phenylenediamine, 4-N, N-bis (β-hydroxyethyl) amino-2-methylaniline, 4-N, N-bis (β-hydroxyethyl) amino-2-chloroaniline, 2-β -Hydroxyethyl-para-phenylenediamin, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N- (β-hydroxypropyl) -para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N, N-dimethyl-3-methyl-para-phenylenediamine, N-ethyl-N- (β-hydroxy Tyl) -para-phenylenediamine, N- (β, γ-dihydroxypropyl) -para-phenylenediamine, N- (4'-aminophenyl) -para-phenylenediamine, N-phenyl-para- Phenylenediamine, 2-β-hydroxyethyloxy-para-phenylenediamine, 2-β-acetylaminoethyloxy-para-phenylenediamine, N- (β-methoxyethyl) -para-phenylenediamine, 4-aminophenylpyrrolidine, 2-thienyl-para-phenylenediamine, 2-β-hydroxyethylamino-5-aminotoluene and 3-hydroxy-1- (4'-aminophenyl) pyrrolidine , And acid addition salts thereof.

Among the para-phenylenediamines mentioned above, para-phenylenediamine, para-tolylenediamine, 2-isopropyl-para-phenylenediamine, 2-β-hydroxyethyl-para-phenylenediamine, 2-β -Hydroxyethyloxy-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, N , N-bis (β-hydroxyethyl) -para-phenylenediamine, 2-chloro-para-phenylenediamine and 2-β-acetylaminoethyloxy-para-phenylenediamine, and acid addition salts thereof desirable.

Among the bis (phenyl) alkylenediamines which may be mentioned, for example, N, N'-bis (β-hydroxyethyl) -N, N'-bis (4'-aminophenyl) -1,3-diamino Propanol, N, N'-bis (β-hydroxyethyl) -N, N'-bis (4'-aminophenyl) ethylenediamine, N, N'-bis (4-aminophenyl) tetramethylenediamine, N, N'-bis (β-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 Its acid addition salts.

Among the para-aminophenols that may be mentioned are, for example, para-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-hydroxymethylphenol, 4- Amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2- (β-hydroxy Ethylaminomethyl) phenol and 4-amino-2-fluorophenol, and acid addition salts thereof.

Among the ortho-aminophenols that may be mentioned are, for example, 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol and 5-acetamido-2-aminophenol, and their Acid addition salts.

Among the heterocyclic bases that may be mentioned are, for example, pyridine derivatives, pyrimidine derivatives and pyrazole derivatives such as 4,5-diaminopyrazole derivatives.

Among the pyridine derivatives which may be mentioned, for example, 2,5-diaminopyridine, 2- (4-methoxyphenyl) amino-3-aminopyridine, 2,3-diamino-6-methoxypyridine, 2- compounds described in patents GB 1 026 978 and GB 1 153 196, such as (β-methoxyethyl) amino-3-amino-6-methoxypyridine and 3,4-diaminopyridine, and acid addition salts thereof .

Other pyridine oxide bases useful in the present invention are, for example, the 3-aminopyrazolo [1,5-a] pyridine oxide bases or addition salts thereof described in patent application FR 2 801 308. Examples include pyrazolo [1,5-a] pyrid-3-ylamine; 2-acetylaminopyrazolo [1,5-a] pyrid-3-ylamine; 2-morpholin-4-ylpyrazolo [1,5-a] pyrid-3-ylamine; 3-aminopyrazolo [1,5-a] pyridine-2-carboxylic acid, 2-methoxypyrazolo [1,5-a] pyrid-3-ylamine; (3-aminopyrazolo [1,5-a] pyrid-7-yl) methanol; 2- (3-aminopyrazolo [1,5-a] pyrid-5-yl) ethanol; 2, (3-aminopyrazolo [1,5-a] pyrid-7-yl) ethanol; (3-aminopyrazolo [1,5-a] pyrid-2-yl) methanol; 3,6-diaminopyrazolo [1,5-a] pyridine; 3,4-diaminopyrazolo [1,5-a] pyridine; Pyrazolo [1,5-a] pyridine-3,7-diamine; 7-morpholin-4-ylpyrazolo [1,5-a] pyrid-3-ylamine; Pyrazolo [1,5-a] pyridine-3,5-diamine; 5-morpholin-4-ylpyrazolo [1,5-a] pyrid-3-ylamine; 2-[(3-aminopyrazolo [1,5-a] pyrid-5-yl) (2-hydroxyethyl) amino] ethanol; 2-[(3-aminopyrazolo [1,5-a] pyrid-7-yl) (2-hydroxyethyl) amino] ethanol; 3-aminopyrazolo [1,5-a] pyrid-5-ol; 3-aminopyrazolo [1,5-a] pyrid-4-ol; 3-aminopyrazolo [1,5-a] pyrid-6-ol; Mention may be made of 3-aminopyrazolo [1,5-a] pyrid-7-ols and also acid or base addition salts thereof.

Among the pyrimidine derivatives which may be mentioned, for example, patent DE 2 359 399 or patent JP 88-169 571; JP 05-63 124; Compounds described in EP 0 770 375 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 and 2,5,6-triaminopyrimidine, and pyrazolopyrimidine derivatives such as patent applications FR -A-2 750 048, among which are pyrazolo [1,5-a] pyrimidine-3,7-diamine; 2,5-dimethylpyrazolo [1,5-a] pyrimidine-3,7-diamine; Pyrazolo [1,5-a] pyrimidine-3,5-diamine; 2,7-dimethylpyrazolo [1,5-a] pyrimidine-3,5-diamine; 3-aminopyrazolo [1,5-a] pyrimidin-7-ol; 3-aminopyrazolo [1,5-a] pyrimidin-5-ol; 2- (3-amino pyrazolo [1,5-a] pyrimidin-7-ylamino) ethanol, 2- (7-aminopyrazolo [1,5-a] pyrimidin-3-ylamino) ethanol, 2-[(3-aminopyrazolo [1,5-a] pyrimidin-7-yl) (2-hydroxyethyl) amino] ethanol, 2-[(7-aminopyrazolo [1,5-a] Pyrimidin-3-yl) (2-hydroxyethyl) amino] ethanol, 5,6-dimethylpyrazolo [1,5-a] pyrimidine-3,7-diamine, 2,6-dimethylpyrazolo [1 , 5-a] pyrimidine-3,7-diamine, 2,5, N7, N7-tetramethylpyrazolo [1,5-a] pyrimidine-3,7-diamine and 3-amino-5-methyl- 7-imidazolylpropylaminopyrazolo [1,5-a] pyrimidine, and acid addition salts thereof and tautomeric forms thereof, where tautomeric equilibrium is present.

Among the pyrazole derivatives that may be mentioned, compounds described in patents DE 3 843 892 and DE 4 133 957 and patent applications WO 94/08969, WO 94/08970, FR-A-2 733 749 and DE 195 43 988, such as 4 , 5-diamino-1-methylpyrazole, 4,5-diamino-1- (β-hydroxyethyl) pyrazole, 3,4-diaminopyrazole, 4,5-diamino-1- ( 4'-chlorobenzyl) pyrazole, 4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-methyl-1-phenylpyrazole, 4,5-diamino-1- Methyl-3-phenylpyrazole, 4-amino-1, 3-dimethyl-5-hydrazinopyrazole, 1-benzyl-4,5-diamino-3-methylpyrazole, 4,5-diamino-3 -tert-butyl-1-methylpyrazole, 4,5-diamino-1-tert-butyl-3-methylpyrazole, 4,5-diamino-1- (β-hydroxyethyl) -3-methyl Pyrazole, 4,5-diamino-1-ethyl-3-methylpyrazole, 4,5-diamino-1-ethyl-3- (4'-methoxyphenyl) pyrazole, 4,5-diamino -1-ethyl-3-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-1-methylpyrazole, 4,5-diamino-3-hydroxy Oxymethyl-1-isopropylpyrazole, 4,5-diamino-3-methyl-1-isopropylpyrazole, 4-amino-5- (2'-aminoethyl) amino-1,3-dimethylpyrazole , 3,4,5-triaminopyrazole, 1-methyl-3,4,5-triaminopyrazole, 3,5-diamino-1-methyl-4-methylaminopyrazole and 3,5-dia Mino-4- (β-hydroxyethyl) amino-1-methylpyrazole, and acid addition salts thereof.

The composition of the present invention preferably contains at least one para-phenylenediamine and / or one paraaminophenol.

The oxidation base (s) present in the dye composition of the present invention are each present in an amount of generally 0.001% to 10% by weight, preferably 0.005% to 6% by weight relative to the total weight of the dye composition.

The composition of the present invention may contain a coupling agent. Such coupling agents are coupling agents commonly used in oxidative dyeing, such as meta-phenylenediamine coupling agents, meta-aminophenol coupling agents, meta-diphenol coupling agents, naphthalene-based coupling agents and heterocyclic coupling agents, and It can be selected from addition salts thereof.

Examples that may be mentioned include 2-methyl-5-aminophenol, 5-N- (β-hydroxyethyl) amino-2-methylphenol, 6-chloro-2-methyl-5-aminophenol, 3-amino Phenol, 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2,4-diamino-1- (β-hydroxy Hydroxyethyloxy) benzene, 2-amino-4- (β-hydroxyethylamino) -1-methoxybenzene, 1,3-diaminobenzene, 1,3-bis (2,4-diaminophenoxy) Propane, 3-ureidoaniline, 3-ureido-1-dimethylaminobenzene, sesamol, 1-β-hydroxyethylamino-3,4-methylenedioxybenzene, α-naphthol, 2-methyl -1-naphthol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine, 6-hydroxybenzomorpholine, 3,5-dia Mino-2,6-dimethoxypyridine, 1-N- (β-hydroxyethyl) amino-3,4-methylenedioxybenzene and 2,6-bis (β-hydroxyethylamino) toluene, and their Acid addition salts It is hereinafter.

In the compositions of the present invention, the coupling agent (s) are each present in an amount of generally 0.001% to 10% by weight, preferably 0.005 to 6% by weight relative to the total weight of the dye composition.

Examples of polyoxyethylenated sorbitan esters having up to 10 moles of ethylene oxide, such as 4 EO and oxyethylenated sorbitan monolaurate or sorbitan oxyethylated with polysorbate 21, 4 EO Mention may be made of sorbitan monooleate or polysorbate 81 oxyethylenated with rate or polysorbate 61 and 5 EO. Such sorbitan esters are commercially available from Uniqema under the names Tween 21, Tween 61 or Tween 81, for example.

According to certain embodiments, the number of moles of ethylene oxide is less than 6 mol of ethylene oxide and preferably in the range of 2 to 5 mol, inclusive, ethylene oxide.

According to the present invention, sorbitan esters may be present in amounts that are highly variable depending on, for example, the type of color or the nature of the keratin fibers to be dyed. According to one specific embodiment, the composition comprises an amount in the range of 0.01% to 20%, more particularly in the range of 0.1% to 10%, and preferably in the range of 1% to 8%, based on the total weight of the composition Sorbitan esters of

The dye composition may also contain a direct dye. Direct dyes that may be mentioned are neutral, acidic or cationic nitrobenzene direct dyes, neutral, acidic or cationic azo direct dyes, neutral, acidic or cationic quinones and especially anthraquinone direct dyes, azine direct dyes, triarylmethanes Direct dyes, indoamine direct dyes and natural direct dyes.

Suitable media for dyeing are advantageously water, or branched or unbranched C ₁ -C ₄ lower alcohols such as ethanol and isopropanol; Polyols and polyol ethers such as 2-butoxyethanol, propylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether and monomethyl ether, and glycerol, and also aromatic alcohols such as benzyl alcohol or phenoxyethanol, and mixtures thereof A cosmetic medium consisting of a mixture of one or more organic solvents and water, such as.

The solvent is present in a proportion of preferably about 1% to 40% by weight and even more preferably about 5% to 30% by weight relative to the total weight of the dye composition.

Dye compositions useful in the methods of the invention also include various adjuvants commonly used in compositions for hair dyeing, such as anionic, cationic, nonionic, zwitterionic or zwitterionic surfactants or mixtures thereof, Anionic, cationic, nonionic, zwitterionic or zwitterionic polymers or mixtures thereof, inorganic or organic thickeners, antioxidants, penetrants, sequestrants, fragrances, buffers, dispersants, conditioning agents agents), for example volatile or nonvolatile, modified or unmodified silicones, film formers and especially nonionic, cationic, anionic or zwitterionic fixing polymers, preservatives and opaque agents. All.

According to one specific embodiment, the composition of the present invention contains at least one surfactant, preferably a nonionic surfactant, and / or a thickening polymer.

The adjuvant is generally present in amounts of from 0.01% to 20% by weight, respectively, relative to the weight of the composition.

Of course, those skilled in the art will note the selection of any additional compound, such that the addition (s) envisioned do not adversely or substantially affect the inherent advantageous properties associated with the composition according to the invention.

The pH of the dye composition according to the invention is generally about 2 to 12 and preferably about 6 to 12.

This can usually be adjusted to the desired value using a basic or acidifying agent, or alternatively a standard buffer system, used to dye keratin fibers.

Among the acidifying agents, mention may be made, for example, of mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid, citric acid and lactic acid, and sulfonic acid.

Among the basicizing agents are, for example, aqueous ammonia, alkaline carbonates, alkanolamines such as mono-, di-, and triethanolamine and derivatives thereof, sodium hydroxide, potassium hydroxide and compounds of formula (III) This may be mentioned:

[Wherein, W is a propylene moiety unsubstituted or substituted with a C ₁ -C ₄ alkyl radical or a hydroxy group; R ₆ , R ₇ , R ₈ and R ₉ , which may be the same or different, represent a hydrogen atom, a C ₁ -C ₄ alkyl radical or a C ₁ -C ₄ hydroxyalkyl radical.

Dye compositions are generally used starting with a composition containing an alkali agent, which is generally present in an amount greater than 5% by weight relative to the weight of the dye composition. It may be present in an amount greater than 10% and in particular greater than 15%.

According to one particular embodiment of the invention, the dye composition comprises or will be used with at least one basic agent, in particular ammonia and / or alkanolamines such as ethanolamine and / or silicates such as sodium silicate.

The dye compositions of the present invention may be in various forms, such as in the form of liquids, creams or gels, or any other form suitable for keratin fibres and especially human hair dyeing.

The dye composition may also contain an oxidizing agent. Oxidants commonly used for oxidative staining of keratin fibers are, for example, hydrogen peroxide, urea peroxide, alkali metal bromates, persalts such as perborate and persulfate, peracids and oxidases, among which peroxy Mention may be made of multises, two-electron redox enzymes such as uricase and four-electron oxygenases such as laccases. Hydrogen peroxide is particularly preferred.

The oxidizing agent may be added to the dye composition at the time of use, or may be used starting with the oxidizing composition containing the same, which composition is applied simultaneously or sequentially with the composition of the present invention. Oxidizing compositions are also commonly used in hair dye compositions and may contain several adjuvants as defined above.

The pH of the oxidizing composition containing the oxidizing agent, after mixing with the dye composition, preferably has a pH of the resulting composition which is applied to the keratin fibers in the range of about 3-12 and even more preferably 6-12. This can be adjusted to the desired value as defined above and by the acidifying or basicizing agents generally used for dyeing keratin fibers.

The dye composition finally applied to the keratinous fibers may be in various forms, such as in the form of liquids, creams or gels, or any other form suitable for keratinous fibers and especially human hair.

The dyeing of the keratin fibers is usually carried out by applying the dye composition for a sufficient time to obtain the desired coloring. The leave-on time is generally about 1 to 60 minutes and preferably about 5 to 60 minutes. After this dyeing step, a washing step is generally followed.

The dyeing step can be carried out at room temperature or higher, for example using a hair dryer, a drying hood, a smoothing iron or the like.

The following examples are intended to illustrate the invention. However, the present invention is not limited to this embodiment.

Example

The following dye compositions were prepared (grams).

Example 1 Example 2 1-methyl-2,5-diaminobenzene 1.7 g 0.5 g 1-hydroxy-4-aminobenzene 0.4 g 1,3-dihydroxybenzene 1 g 0.25 g 1-hydroxy-3-aminobenzene 0.07 g 1-β-hydroxyethyloxy-2,4-diaminobenzene dihydrochloride 0.03 g 2-methyl-1,3-dihydroxybenzene 0.5 g 0.3 g 1-methyl-2-hydroxy-4-aminobenzene 0.25 g 1-Methyl-2-hydroxy-4-β-hydroxyethyl-aminobenzene 0.05 g 6-hydroxyindole 0.01 g Pure monoethanolamine 5 g Aqueous ammonia with 20% NH ₃ 10 g Nalco commercial polyquaternium-6 3 g Nalco commercial polyquaternium-22 1.5 g Hexadimethrin chloride (Mexomere PO, Chimex) 1.5 g Propylene glycol 10 g 10 g Noveon commercial Carbopol 980 (crosslinked polyacrylic acid) 0.4 g 0.4 g Lauryl alcohol oxyethylated with 12 mol of ethylene oxide 7.5 g 7.5 g Oleocetyl alcohol oxyethylated with 30 mol of EO 6 g 6 g Decyl alcohol oxyethylenated with 3 mol of EO 8 g 8 g Lauric acid 2.5 g 2.5 g 50/50 Cetylstearyl Alcohol 10 g 10 g Hydrophobic Fumed Silica 1 g 1 g Glyceryl Monostearate 1 g 1 g Sorbitan monolaurate oxyethylated with 4 EO 3 g 5 g Reducing agents, antioxidants, sequestrants, fragrances Quantity Quantity Demineralized water (appropriate) 100 g 100 g

Example 3 Example 4 1-methyl-2,5-diaminobenzene 1.7 g 0.007 g 1-hydroxy-4-aminobenzene 0.007 g 1,3-dihydroxybenzene 1 g 0.014 g 1-hydroxy-3-aminobenzene 0.07 g 1-β-hydroxyethyloxy-2,4-diaminobenzene dihydrochloride 0.03 g 2-methyl-1,3-dihydroxybenzene 0.5 g Aqueous ammonia with 20% NH ₃ 10 g 20 g Nalco commercial polyquaternium-6 3 g% Nalco commercial polyquaternium-22 1.5 g Hexadimethrin chloride (Mexomere PO, Chimex) 1.5 g Oleic acid 2.5 g 2.5 g Oxyethylenated fatty alcohols 15 g 15 g Oleyl alcohol 1 g 1 g Uniqema commercial monoamide 972 (fatty amide) 3 g 5 g Glycerol 5 g Polyurethane-16 0.2 g 0.4 g Hydroxypropylmethylcellulose 0.3 g 0.7 g Sorbitan monolaurate oxyethylated with 4 EO 5 g 7 g Reducing agents, antioxidants, sequestrants, fragrances Quantity Quantity Demineralized water (appropriate) 100 g 100 g

Composition 1 was immediately mixed with 1.5-vol. 9-volume hydrogen peroxide aqueous solution (about pH 3) of that volume.

Composition 2 was immediately mixed with an aqueous 20-volume hydrogen peroxide solution of 1.5 times its volume.

Immediate composition 3 and 4 with a 20-volume aqueous solution of hydrogen peroxide (about pH 3) of 1.5 times its volume relative to composition 3 and a 40-volume aqueous solution of hydrogen peroxide (about pH 3) twice its volume relative to composition 4 Mixed.

Each mixture thus obtained is applied to white hair containing 90% white hair, at a rate of 30 g per 3 g. The standing time at room temperature is 20 minutes for Compositions 1 and 2 and 30 minutes for Compositions 3 and 4.

The hair is then washed, washed with normal shampoo and dried. Hair coloring is assessed visually.

Hue depth Color Composition 1 brown Naturalness Composition 2 Dark blonde Mahogany copper Composition 3 brown Naturalness Composition 4 Very very bright blonde Naturalness

The fibers thus obtained exhibit satisfactory coloration under conditions comfortable to the model.

The composition according to the invention makes it possible to maintain strong pigmentation and at the same time limit the discomfort that may be experienced on the scalp upon or after the application of the dye composition.

Claims (17)

A composition for dyeing keratin fibres, comprising, in a suitable medium, at least one oxidizing base, optionally at least one couplingr and at least one polyoxyethylenated sorbitan ester having a mole of ethylene oxide of 10 or less. The composition of claim 1 wherein the polyoxyethylenated sorbitan ester is an ethylene oxide having a molar number of ethylene oxide of less than 6 mol. The composition of claim 1 or 2, wherein the polyoxyethylenated sorbitan ester comprises a mole number of ethylene oxide in the range of 2 to 5, including limits. 3. The polyoxyethylenated sorbitan ester according to claim 1 or 2, wherein the polyoxyethylenated sorbitan ester is oxyethylated with 4 EO, sorbitan monostearate with 4 EO and oxyethylated with 5 EO. Sorbitan monooleate. The composition of claim 1 or 2, wherein the amount of sorbitan ester is in the range of 0.01% to 20% by weight relative to the weight of the composition. The composition of claim 1 or 2, wherein the amount of sorbitan ester is in the range of 1% to 8%. The process according to claim 1 or 2, wherein the oxidized base (s) are para-phenylenediamine, bis (phenyl) alkylenediamine, para-aminophenol, bis-para-aminophenol, ortho-aminophenol and heterocy. A composition selected from the click base, and addition salts thereof. 8. The composition of claim 7, wherein the oxidizing base (s) present in the dye composition are each present in an amount of approximately 0.001% to 10% by weight relative to the total weight of the composition. The dye composition according to claim 1 or 2, wherein the dye composition is selected from meta-phenylenediamine coupling agents, meta-aminophenol coupling agents, meta-diphenol coupling agents, naphthalene-based coupling agents and heterocyclic coupling agents and addition salts thereof. A composition comprising at least one coupling agent. 10. The composition of claim 9, wherein the coupling agent (s) are each present in an amount of approximately 0.001% to 10% by weight relative to the total weight of the dye composition. The composition of claim 1 or 2, wherein the dye composition also contains a direct dye. The composition of claim 1 or 2, wherein the dye composition contains a basic agent. A method for dyeing keratin fibers, comprising applying the composition according to claim 1 to the keratin fibers for a time sufficient to obtain the desired coloration. In order to eliminate or reduce the discomfort associated with the application of the dye composition to the scalp in the presence of an oxidizing agent, a polyoxyethylenated sorbitan ester having a molar number of ethylene oxide of 10 or less is used in a composition containing at least one oxidizing base. Way. 6. The composition of claim 5, wherein the amount of sorbitan ester is in the range of 0.1% to 10% by weight relative to the weight of the composition. The composition of claim 8, wherein the oxidizing base (s) present in the dye composition are each present in an amount of approximately 0.005% to 6% by weight relative to the total weight of the composition. The composition of claim 10, wherein the coupling agent (s) are each present in an amount of approximately 0.005% to 6% by weight relative to the total weight of the dye composition.