Dyeing kit

Abstract

Dyeing Kit. The present invention relates to a dyeing kit comprising: a) a dye composition, comprising: a1) 1.5% by weight or more of at least one antioxidant, relative to the total weight of the dye composition, and a2) at least one oxidative dye; and b) a developer composition comprising: b1) from 0.5% by weight to 10% by weight of at least one oxidant, relative to the total weight of the dye composition; wherein the mixture of the dye composition and the developer composition has a pH value of 8.3 or lower. Figure for abstract: none

Description

Title of the invention: Dyeing kit technical field

[0001] The present invention relates to a dyeing kit. Preferably, the present invention relates to a dyeing kit for dyeing keratin fibers, preferably hair. The present invention also relates to a method for dyeing keratin fibers, preferably hair. CONTEXT OF THE INVENTION

[0002] Many people have long sought to change the color of their hair, and in particular to dye it in order, for example, to mask their greying hair.

[0003] “Permanent” dyeing processes, also known as oxidative dyeing, which use dye compositions containing oxidative dye precursors, generally called oxidation bases, have been developed for the durable dyeing of human keratin fibers. These oxidation bases are colorless or weakly colored compounds that, when combined with oxidants, can give rise to colored compounds via an oxidative condensation process.

[0004] Consumers wish to dye only the target area. However, when dyeing hair, other areas may be undesirably dyed (stained), such as the hands, face, ears, and the like. Therefore, consumers should take extra care to avoid staining.

[0005] In addition, there are also challenges in stably storing dye products, particularly at high temperatures and / or for long periods.

[0006] Therefore, there is a need for a dyeing product that can effectively prevent staining and be stored stably at a high temperature for a long period of time. Summary of the invention

[0007] The inventors have discovered that such a need can be met by the dyeing kit according to the present invention.

[0008] According to a first aspect, the present invention proposes a dyeing kit comprising:

[0009] a) a dye composition, comprising:

[0010] al) 1.5% by weight or more of at least one antioxidant, relative to the total weight of the colorant composition;

[0011] a2) at least one oxidative dye; and

[0012] b) a developer composition comprising:

[0013] bl) from 0.5% by weight to 10% by weight of at least one oxidant, relative to the total weight of the developer composition;

[0014] in which the mixture of the colorant composition and the developer composition has a pH value of 8.3 or lower.

[0015] By means of the specific amounts of antioxidant in the dye composition and oxidant in the developer composition, and the pH value of the mixture of the dye composition and the developer composition, the dyeing kit of the present invention can effectively avoid staining and can be stored stably at a high temperature for a long period.

[0016] According to a second aspect, the present invention proposes a method for dyeing keratin fibers, preferably hair, comprising:

[0017] a) the mixture of the colorant composition and the developer composition according to the first aspect; and

[0018] b) the application of the mixture obtained in step a) onto the keratin fibers.

[0019] Other subjects and features, aspects and advantages of the present invention will become even clearer upon reading the detailed description and examples that follow. Brief description of the drawings

[0020] [Fig-1] The [Fig.1] is an image of the standard atlas scale for estimating aspects rinsing water obtained from the embodiments of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] In what follows and unless otherwise indicated, the limits of a range of values ​​are included in that range, in particular in the expressions "between...and..." and "from...to...".

[0022] The articles “a” and “an,” as used herein, mean one or more when applied to any particular feature in embodiments of the present invention described in the patent memorandum and claims. The use of “a” and “an” does not limit the meaning to a single feature unless such a limitation is specifically stated. Furthermore, the expression “at least one” used in this description is equivalent to the expression “one or more.”

[0023] Throughout this application, the term "including" shall be interpreted as encompassing all the specifically mentioned features as well as optional, additional, unspecified features. As used herein, the use of the term "including" also discloses the embodiment in which no material features, or indeed any features other than the features specifically mentioned, is not present (such as "consisting essentially of" or "consisting of"). In the case of "consisting essentially of", any additional composition, material and / or component that materially affects the fundamental and new features is excluded from such an embodiment, but any composition, material and / or component that does not materially affect the fundamental and new features may be included in the embodiment.

[0024] Unless otherwise stated, all numerical values ​​expressing a quantity of ingredients and the like used in the description and claims are to be understood as modified by the term "approximately". Accordingly, unless otherwise stated, the numerical values ​​and parameters described herein are approximate values ​​that may be modified according to the desired performance as required. The term "approximately" referring to a certain value is intended to denote a range to within ±5% of the value, for example: within ±3%, ±2%, ±1%, and ±0.5% of the value.

[0025] As used herein, the expression "keratin fiber(s)" refers to hair, eyelashes, eyebrows, or body hair. Preferably, keratin fiber(s) refers to hair, and preferably human hair. Dye composition

[0026] The dyeing kit according to the present invention comprises a dye composition. Antioxidant

[0027] The colorant composition of the present invention comprises an amount of 1.5% by weight or more of at least one antioxidant, relative to the total weight of the colorant composition.

[0028] As used here, the term “antioxidant” refers to a molecule that inhibits the oxidation of another molecule by being itself oxidized.

[0029] According to the present invention, the antioxidant can be selected from ascorbic acid compounds, tocopherol compounds, salicylic acid compounds, sulfur-containing compounds, phenylpropanoids, and mixtures thereof.

[0030] The ascorbic acid compound may be selected from ascorbic acids, ascorbic acid esters, ascorbic acid salts, and mixtures thereof. Examples of suitable ascorbic acid compounds include, but are not limited to, ascorbic acid, erythorbic acid (or isoascorbic acid), tetrahexyldecyl ascorbate / erythorbate, ascorbyl laurate, ascorbyl palmitate, magnesium ascorbyl phosphate, ascorbyl glucoside, glucosamine ascorbate, and ascorbyl acetate. In addition, plants containing a high amount of vitamin C, such as extracts of Myrciaria dubia, acerola, emblica officinalis, and rose fruit and citrus bioflavonoids, including water-soluble bioflavonoids such as hesperidin methyl chalcone.

[0031] The tocopherol compound may be selected from tocopherols, tocopherol esters, and mixtures thereof. Examples of suitable tocopherol compounds include, but are not limited to, alpha-tocopherol, beta-tocopherol, gamma-tocopherol, delta-tocopherol, and tocopheryl acetate.

[0032] The salicylic acid compound may be selected from salicylic acid, salicylic acid salts, and mixtures thereof. An example of a salicylic acid compound is sodium salicylate.

[0033] The sulfur-containing compound may be selected from sulfite diesters of formula RO-SO2-R', where R and R' denote CrClO alkyl groups. Alternatively, the sulfur-containing compound may be selected from an alkali metal or an alkaline earth metal, or from ammonium sulfites and bisulfites, substituted or unsubstituted sulfur-containing amino acids, and mixtures thereof. Examples of such sulfur-containing compounds include, but are not limited to, potassium sulfite, sodium sulfite, potassium bisulfite, sodium bisulfite, potassium metabisulfite, cysteine, methionine, taurine, N-acetylcysteine, and glutathione.

[0034] Phenylpropanoids can be selected from cinnamic acid and its derivatives, caffeic acid, ferulic acid, including transferulic acid, 5-hydroxyferulic acid, synapic acid, coumarin, coniferyl alcohol, sinapyl alcohol, eugenol, chavicol, baicalein, p-coumaric acid, synaptic acid, and mixtures thereof. Without limiting the mode of action of the present invention, phenylpropanoids can neutralize free radicals.

[0035] Useful cinnamic acid derivatives include, but are not limited to, 2-ethylhexyl methoxycinnamate, isopropyl methoxycinnamate, isoamyl methoxycinnamate, diisopropyl methoxycinnamate, pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate, and octadecyl di-t-butyl-4-hydroxyhydrocinnamate.

[0036] Preferably, the antioxidant is selected from ascorbic acid compounds, sulfur-containing compounds, and mixtures thereof. More preferably, the antioxidant is selected from ascorbic acids, alkali metal or alkaline earth metal or ammonium sulfites and bisulfites, and mixtures thereof. Even more preferably, the antioxidant is selected from ascorbic acid, erythorbic acid, potassium sulfite, sodium sulfite, and mixtures thereof.

[0037] Advantageously, the antioxidant is present in an amount ranging from 1.5% by weight to 10% by weight, preferably from 1.5% by weight to 8% by weight, and more preferably from 1.5% by weight to 5% by weight, relative to the total weight of the colorant composition. Oxidative dye

[0038] The dye composition according to the present invention comprises at least one oxidative dye.

[0039] Preferably, the oxidative dye that can be used in the present invention comprises at least one oxidation base, and optionally at least one coupler.

[0040] Preferably, the oxidation base is chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and their addition salts, and mixtures thereof.

[0041] The para-phenylenediamines can be selected from para-phenylenediamine, para-toluenediamine (toluene-2,5-diamine), 2-chloro-para-phenylenediamine, 2-methyl-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([3-hydroxyethyl)amine o-2-chloroaniline, 2-[3-hydroxyethyl-para-phenylenediamine, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N-([3-hydroxypropyl)-para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N,N-dimethyl-3-methyl-para-phenylenediamine, N,N-(ethyl-[3-hydroxyethyl)-para-phenylenediamine, N-([3,y-dihydroxypropyl)-para-phenylenediamine, N-(4'-aminophenyl)-para-phenylenediamine, N-phenyl-para-phenylenediamine, 2-[3-hydroxyethyloxy-para-phenylenediamine, 2-[3-acetylaminoethyloxy-para-phenylenediamine, N-([3-methoxyethyl)-para-phenylenediamine, 2-thienyl-para-phenylenediamine, 2-[3-hydroxyethylamino-5-aminotoluene, and mixtures thereof.

[0042] Bis(phenyl)alkylenediamine can be selected from 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 mixtures thereof.

[0043] The para-aminophenol can be selected from para-aminophenol, 4-amino-3-methylphenol, 4-amino-2-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-chlorophenol, 4-amino-3-hydroxymethylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2-([3-hydroxyethylaminomethyl)phenol, 4-amino-2-fluorophenol, and mixtures thereof.

[0044] The ortho-aminophenol can be selected from 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol, 5-acetamido-2-aminophenol, and mixtures thereof.

[0045] The heterocyclic base is preferably chosen from pyridine derivatives, pyrimidine derivatives, pyrazole derivatives, and mixtures thereof.

[0046] Among the pyridine derivatives that can be cited are the compounds described, for example, in patents GB 1 026 978 and GB 1 153 196, for example 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3-aminopyridine, 3,4-diaminopyridine, and mixtures thereof.

[0047] Other pyridine derivatives that are useful in the present invention include, but are not limited to, 3-aminopyrazolo[l,5-a]pyridine, pyrazolo[l,5-a]pyridin-3-ylamine, 2-(acetylamino)pyrazolo[l,5-a]pyridin-3-ylamine, 2-(morpholin-4-yl)pyrazolo[l,5-a]pyridin-3-ylamine, 3-aminopyrazolo[l,5-a]pyridine-2-carboxylic acid, 2-methoxypyrazolo[l,5-a]pyridin-3-ylamine, (3-aminopyrazolo[l,5-a]pyridin-7-yl)methanol, 2-(3-aminopyrazolo[l,5-a]pyridin-5-yl)ethanol, 2-(3-aminopyrazolo[l,5-a]pyridin-7-yl)ethanol, (3-aminopyrazolo[l,5-a]pyridin-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-yl)pyrazolo[l,5-a]pyridin-3-ylamine, pyrazolo[l,5-a]pyridine-3,5-diamine, 5-(morpholin-4-yl)pyrazolo[l,5-a]pyridin-3-ylamine, 2-[(3-aminopyrazolo[l,5-a]pyridin-5-yl)(2-hydroxyethyl)amino]ethanol, 2-[(3-aminopyrazolo[l,5-a]pyridin-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[l,5-a]pyridin-7-ol, and mixtures thereof.

[0048] Among the pyrimidine derivatives that may be cited are the compounds described, for example, in patents DE 2359399; 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 tautomeric forms, where a tautomeric equilibrium exists.

[0049] Among the pyrazole derivatives that may be cited are the compounds described in patents DE 3843892 and DE 4133957 and patent applications WO 94 / 08969, WO 94 / 08970, FR-A-2 733 749 and DE 195 43 988, for example 4,5-diaminopyrazole, 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-l,3-dimethylpyrazole, 4,5-diamino-3-methyl-l-phenylpyrazole, the 4,5-diamino-l-methyl-3-phenylpyrazole, 4-amino-l,3-dimethyl-5-hydrazinopyrazole, l-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-([3-hydroxyethyl)-3-methylpyrazole, 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-hydroxymethyl-1-isopropylpyrazole, 4,5-diamino-3-methyl-1-isopropylpyrazole, 4-amino-5-(2'-aminoethyl)amino-1,3-dimethylpyrazole, 3,4,5-triaminopyrazole, 11-methyl-3,4,5-triaminopyrazole, 3,5-diamino-1-methyl-4-methylaminopyrazole, 4,5-diamino-1-([3-methoxyethyl)pyrazole and 3,5-diamino-4-(|3-hydroxyethyl)amino-1-methylpyrazole, and mixtures thereof.

[0050] Preferably, the coupler is chosen from among meta-phenylenediamines, meta-aminophenols, diaminophenols and their ether derivatives, meta-diphenols, naphthalene-based couplers, heterocyclic couplers, and their addition salts, and mixtures thereof.

[0051] More preferably, the coupler is chosen from unsubstituted meta-aminophenol, meta-aminophenols substituted with one or two Cr-C4 alkyl groups and / or one or two halogens, unsubstituted meta-diphenol, meta-diphenols substituted with one or two Ci-C4 alkyl groups and / or one or two halogens, diaminophenol ethers, diaminobenzenes, naphthols, hydroxyindoles, amino-substituted hydroxypyridines, hydroxybenzomorpholines, and mixtures thereof. As used herein, the term "meta-diphenol" means 1,3-dihydroxybenzene. As used here, the expression "diaminophenol ether" or "diaminophenol ether derivative" refers to an ether obtained from the reaction of the benzene-bonded hydroxyl group of diaminophenol with another compound having at least one hydroxyl group or itself.

[0052] Even more preferably, the coupler is chosen from among l-hydroxy-3-aminobenzene, l-methyl-2-hydroxy-4-aminobenzene, 1,3-dihydroxybenzene, l,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2,4-diamino-l-([3-hydroxyethyloxy)benzene, 2-amino-4-([3-hydroxyethylamino)-l-methoxybenzene, l,3-bis(2,4-diaminophenoxy)propane, 1,3-diaminobenzene, 3-ureidoaniline, 3-ureido-l-dimethylaminobenzene, α-naphtol, 2-methyl-l-naphtol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine, the 6-hydroxybenzomorpholine, and their mixtures.

[0053] The addition salts of the oxidation bases and couplers that can be used in the context of the invention can be chosen from addition salts with an acid, such as hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates.

[0054] Preferably, the oxidizing dye, according to the present invention, comprises at least one oxidation base and at least one coupler.

[0055] More preferably, the oxidative dye according to the present invention comprises at least one para-phenylenediamine, at least one meta-aminophenol and at least one hydroxybenzomorpholine.

[0056] Even more preferably, the oxidative dye according to the present invention comprises toluene-2,5-diamine, l-hydroxy-3-aminobenzene and 6-hydroxybenzomorpholine.

[0057] Advantageously, the oxidative dye is present in an amount ranging from 0.05% by weight to 15% by weight, preferably from 0.1% by weight to 10% by weight, and more preferably from 1% by weight to 8% by weight, relative to the total weight of the dye composition.

[0058] If present, the oxidation base is present in an amount ranging from 0.05% by weight to 10% by weight, preferably from 0.1% by weight to 8% by weight, and more preferably from 0.5% by weight to 5% by weight, relative to the total weight of the dye composition.

[0059] If present, the coupler is present in an amount ranging from 0.05% by weight to 8% by weight, preferably from 0.1% by weight to 5% by weight, and more preferably from 0.5% by weight to 3% by weight, relative to the total weight of the dye composition. Non-ionic surfactant

[0060] The colorant composition of the present invention may include at least one non-ionic surfactant.

[0061] According to the present invention, the non-ionic surfactant can be chosen from polyoxyalkylated and / or polyglyceryl non-ionic surfactants, and preferably polyoxyethylated and / or polyglyceryl non-ionic surfactants.

[0062] Preferably, the non-ionic surfactant is selected from polyoxyalkylated hydrogenated castor oils; polyoxyalkylated fatty acid esters of glycerol or optionally polyoxyalkylated fatty acid esters of polyglycerol; polyoxyalkylated fatty alcohol ethers; and mixtures thereof.

[0063] According to the present invention, the polyoxyalkylated hydrogenated castor oil can be selected from PEG-25 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-35 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-45 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-54 hydrogenated castor oil, PEG-55 hydrogenated castor oil, PEG-60 hydrogenated castor oil, PEG-65 hydrogenated castor oil, PEG-80 hydrogenated castor oil, PEG-100 hydrogenated castor oil, PEG-200 hydrogenated castor oil and mixtures thereof.

[0064] According to the present invention, the polyoxyalkylated fatty acid ester of glycerol can be those including polyethylene glycol derivatives of a mixture of mono-, di- and caprylic and capric acid triglycerides (preferably 2 to 30 ethylene oxide motifs).

[0065] In addition, the polyoxyalkylated fatty acid ester of glycerol can be selected from polyoxyethylened derivatives of fatty acid glyceryl esters and their hydrogenated derivatives.

[0066] According to the present invention, the polyglycerol fatty acid ester can be selected from polyglyceryl monolaurate comprising 1 to 20 glycerol motifs, polyglyceryl monomyristate comprising 1 to 20 glycerol motifs, polyglyceryl monocaprate comprising 1 to 20 glycerol motifs, polyglyceryl monocaprylate comprising 1 to 20 glycerol motifs, and mixtures thereof.

[0067] According to the present invention, the polyoxyalkylated fatty alcohol ether can be selected from those having a number of ethylene oxide and / or propylene (EO / PO) motifs ranging from 2 to 40.

[0068] Preferably, the nonionic surfactant is selected from polyoxyalkylated hydrogenated castor oils. More preferably, the nonionic surfactant is selected from PEG-25 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-35 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-45 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-54 hydrogenated castor oil, PEG-55 hydrogenated castor oil, PEG-60 hydrogenated castor oil, and mixtures thereof. Even more preferably, the nonionic surfactant is PEG-40 hydrogenated castor oil.

[0069] Advantageously, the non-ionic surfactant is present in an amount ranging from 0.01% by weight to 20% by weight, preferably from 0.1% by weight to 10% by weight, and more preferably from 0.5% by weight to 5% by weight, relative to the total weight of the colorant composition. Acrylates copolymer

[0070] The colorant composition of the present invention may include at least one acrylate copolymer.

[0071] According to the present invention, the acrylates copolymer can be chosen from crosslinked copolymers of acrylic acid and / or methacrylic acid and one of its esters comprising a hydrocarbyl group having 6 carbon atoms or less, preferably a Ci-C4 alkyl ester.

[0072] Preferably, the acrylate copolymer is selected from crosslinked copolymers of methacrylic acid and Ci-C4 alkyl acrylate. The methacrylic acid is preferably present in an amount ranging from 20% to 80% by weight, preferably from 25% to 70% by weight, and more preferably from 35% to 65% by weight, relative to the total weight of the acrylate copolymer. The acrylate The alkyl group is preferably present in an amount ranging from 15% to 80% by weight, preferably from 25% to 75% by weight, and more preferably from 35% to 65% by weight, relative to the total weight of the acrylate copolymer. It is preferably selected from methyl acrylate, ethyl acrylate, and butyl acrylate, and more preferably ethyl acrylate.

[0073] The acrylate copolymer is preferably partially or totally crosslinked with at least one standard polyethylenically unsaturated crosslinking agent, for example polyalkenyl sucrose or polyol ethers, diallyl phthalates, divinylbenzene, allyl (meth)acrylate, ethylene glycol di(meth)acrylate, methylenebisacrylamide, trimethylolpropane tri(meth)acrylate, diallyl itaconate, diallyl fumarate, diallyl maleate, zinc (meth)acrylate, and castor oil or polyol derivatives made from unsaturated carboxylic acids. The content of crosslinking agent generally ranges from 0.01% by weight to 5% by weight, preferably from 0.03% by weight to 3% by weight and more preferably from 0.05% by weight to 1% by weight, relative to the total weight of the acrylate copolymer.

[0074] Examples include the acrylates copolymer sold under the trade name ACULYN 33® by THE DOW CHEMICAL COMPANY and having the INCI name: Acrylates Copolymer. Another example is the methacrylic acid / ethyl acrylate crosslinked copolymer sold by LUBRIZOL under the trade name Carbopol Aqua SF1 and having the INCI name: Acrylates Copolymer.

[0075] Advantageously, the acrylates copolymer is present in an amount ranging from 0.01% by weight to 15% by weight, preferably from 0.1% by weight to 12% by weight, and more preferably from 1% by weight to 10% by weight, relative to the total weight of the colorant composition. First pH corrector

[0076] The colorant composition according to the present invention may include at least a first pH corrector.

[0077] Preferably, the first pH corrector is chosen from among the bases.

[0078] According to the present invention, the first pH corrector can be chosen from aqueous ammonia; alkali metal carbonates or bicarbonates; organic amines with a pKb at 25 °C of less than 12, preferably less than 10 and more preferably less than 6; and mixtures thereof, in which the pKb corresponds to the function of the highest basicity.

[0079] Preferably, the colorant composition according to the present invention can be free or substantially free of aqueous ammonia.

[0080] Preferably, the organic amines are chosen from alkanolamines, preferably comprising a primary, secondary or tertiary amine function, and one or several linear or branched CrC8 alkyl groups bearing one or more hydroxyl radicals; polyoxyethylenated and / or polyoxypropylenated ethylenediamines; compounds having the following formula: Rx^ ^Rz XN WN^ Ry Rt

[0081] wherein W is a Ci-C6 alkylene residue optionally substituted by a Ci-C6 hydroxyl or alkyl group; Rx, Ry, Rz and Rt, which may be identical or different, independently represent a hydrogen atom or a Ci-C6 alkyl, Ci-C6 hydroxyalkyl or Ci-C6 aminoalkyl group; and mixtures thereof.

[0082] More preferably, the first pH corrector is chosen from among the alkanolamines, preferably comprising a primary, secondary or tertiary amine function, and one or more linear or branched Ci-C8 alkyl groups bearing one or more hydroxyl radicals.

[0083] Even more preferably, the pH corrector is ethanolamine.

[0084] Advantageously, the first pH corrector is added to correct the pH value of the dye composition in the range of 6.5 to 9.5, preferably from 6.8 to 9.0, and more preferably from 7.0 to 8.8. Chelating agent

[0085] The dye composition of the present invention may include at least one chelating agent.

[0086] Preferably, the chelating agent is chosen from ethylenediaminetetraacetic acid (EDTA), tripotassium phosphate, trisodium phosphate, disodium silicate, dipotassium silicate, sodium phytate, tetrasodium etidronate, tetrasodium pyrophosphate, pentasodium ethylenediamine tetramethylene phosphonate, tetrasodium glutamate diacetate, and mixtures thereof.

[0087] More preferably, the chelating agent is chosen from tetrasodium glutamate diacetate, tetrasodium etidronate and one of their mixtures.

[0088] Advantageously, the chelating agent is present in an amount ranging from 0.01% by weight to 8% by weight, preferably from 0.05% by weight to 5% by weight, more preferably from 0.1% by weight to 3% by weight, relative to the total weight of the dye composition. Aqueous solvent

[0089] The dye composition of the present invention may include at least one aqueous solvent.

[0090] Preferably, the aqueous solvent of the dye composition according to the present invention is chosen from water; water-miscible compounds or at least partially miscible with water, for example C2-C8 polyols, and monoalcohols, such as ethanol and isopropanol; and their mixtures.

[0091] The term "polyol" should be understood as designating any organic molecule comprising at least two free hydroxyl groups. Examples of C2-C8 polyols that may be cited include, but are not limited to, butylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, hexylene glycol, caprylyl glycol, glycerol (i.e., glycerin) and ethylene glycol.

[0092] Preferably, the colorant composition according to the present invention comprises water.

[0093] Advantageously, the water is present in an amount ranging from 30% by weight to 98% by weight, preferably from 40% by weight to 96% by weight, and more preferably from 50% by weight to 92% by weight, relative to the total weight of the colorant composition. developer composition

[0094] The dyeing kit according to the present invention comprises a developer composition. Oxidizing agents

[0095] The developer composition according to the present invention comprises 0.5% by weight to 10% by weight of at least one oxidant, relative to the total weight of the developer composition.

[0096] The developer composition of the present invention comprises at least one general-purpose oxidant as one of the active components of the developer composition. The term "oxidant" is intended to refer to an oxidant other than atmospheric oxygen.

[0097] According to the present invention, the oxidant is preferably water-soluble. The expression "water-soluble" is intended to characterize the ability of a compound to dissolve in water, measured at 25 °C, at a concentration of at least 0.1 g / L (producing a macroscopically isotropic, transparent, colored, or colorless solution). This solubility is, in particular, greater than or equal to 1 g / L. The oxidant may be supplied as an aqueous solution or in powder form, which is dissolved before use.

[0098] The oxidant can be hydrogen peroxide or other peroxidizing materials capable of producing hydrogen peroxide.

[0099] Preferably, the oxidant is chosen from hydrogen peroxide, alkali metal bromates, inorganic alkali metal peroxides, organic peroxides, inorganic perhydrate salts, polymer complexes capable of releasing hydrogen peroxide, and mixtures thereof.

[0100] Examples of alkali metal bromates include, but are not limited to, sodium bromate (NaBrO3) and potassium bromate (KBrO3).

[0101] Examples of inorganic alkali metal peroxides include, but are not limited to, sodium peroxide and potassium peroxide.

[0102] The organic peroxide may be alkyl and / or aryl peroxides. Examples of other organic peroxides include, but are not limited to, urea peroxide and melamine peroxide.

[0103] Inorganic perhydrate salts can be used as monohydrates, tetrahydrates, and the like. Examples of inorganic perhydrate salts include, but are not limited to, perborates, percarbonates, perphosphates, persilicates, and persulfates. Preferably, the inorganic perhydrate salts are alkali metal salts, such as potassium persulfate, sodium persulfate, and mixtures thereof.

[0104] An example of a polymer complex capable of releasing hydrogen peroxide is polyvinylpyrrolidone / H2O2, for example, in powder form.

[0105] More preferably, the oxidant is chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persulfates, perborates, and mixtures thereof.

[0106] Even more preferably, the oxidant is hydrogen peroxide.

[0107] Advantageously, the oxidant is present in an amount ranging from 0.5% by weight to 9% by weight, preferably from 0.5% by weight to 7% by weight, and more preferably from 0.5% by weight to 5% by weight, relative to the total weight of the developer composition. Second pH corrector

[0108] The developer composition of the present invention may include at least a second pH corrector.

[0109] Preferably, the second pH corrector is chosen from among the acids.

[0110] Preferably, the acid is chosen from mineral acids, carboxylic acids, Sulfonic acids, phosphonic acids, and their mixtures. Examples of acids that may be mentioned include, but are not limited to, hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, acetic acid, tartaric acid, citric acid, and lactic acid.

[0111] More preferably, the second pH corrector is phosphoric acid.

[0112] Advantageously, the second pH corrector is added to correct the pH value of the developer composition in the range of 1.5 to 3.0, preferably from 1.8 to 2.7, and more preferably from 2.0 to 2.4. Chelating agent

[0113] The developer composition of the present invention may include at least one chelating agent. The type of chelating agent that may be included in the developer composition has the same definitions as that of the dye composition above.

[0114] The amount of the chelating agent in the retarder composition may differ from that in the dye composition. Advantageously, the chelating agent is present in an amount ranging from 0.01% by weight to 3% by weight, preferably from 0.02% by weight to 2% by weight, and more preferably from 0.05% by weight to 1% by weight, relative to the total weight of the developer composition. Thickening agent

[0115] The developer composition of the present invention may include at least one thickening agent.

[0116] Preferably, the thickening agent according to the present invention is chosen from the polysaccharide thickening agent.

[0117] More preferably, the thickening agent is chosen from hydroxypropyl guar, carrageenan, xanthan gum, cellulose gum, cyclodextrin, sclerotium gum, polyvinyl alcohol, and mixtures thereof.

[0118] Even more preferably, the thickening agent is sclerotium gum.

[0119] Advantageously, the thickening agent is present in an amount ranging from 0.01% by weight to 10% by weight, preferably from 0.05% by weight to 8% by weight, more preferably from 0.1% by weight to 5% by weight, relative to the total weight of the developer composition. Aqueous solvent

[0120] The developer composition of the present invention may include at least one aqueous solvent.

[0121] Preferably, the aqueous solvent of the developer composition according to the present invention is chosen from water; one or more water-miscible or at least partially water-miscible compounds, for example C2-C8 polyols, or monoalcohols, such as ethanol and isopropanol; and mixtures thereof.

[0122] The term “polyol” should be understood as designating any organic molecule comprising at least two free hydroxyl groups.

[0123] Preferably, the developer composition according to the present invention comprises water.

[0124] Advantageously, the water is present in an amount ranging from 30% by weight to 99.5% by weight, preferably from 50% by weight to 99% by weight, and more preferably from 70% by weight to 99% by weight, relative to the total weight of the developer composition. Additional ingredients

[0125] The colorant composition and developer composition according to the present invention may each include one or more additional ingredients, chosen from those classically used in cosmetic products, and preferably dyeing products.

[0126] The composition according to the present invention may include any of the following additives: biological extracts; perfumes; active ingredients and preservatives.

[0127] A person skilled in the art can adjust the type and quantity of additional ingredients present in the compositions according to the present invention by means of routine operations, so that the desired properties of these compositions are not negatively affected by the additional ingredients. Dyeing kit

[0128] The dyeing kit comprising the above dye composition and the developer composition as defined above is applicable to all dyeing products, preferably to hair dyeing.

[0129] For the dyeing kit comprising a dye composition and a developer composition according to the present invention, the antioxidant is present in an amount of 1.5% by weight or more, relative to the total weight of the dye composition, and the oxidant is present in an amount ranging from 0.5% by weight to 10% by weight, relative to the total weight of the developer composition, and the mixture of the dye composition and the developer composition has a pH value of 8.3 or less. Preferably, the mixture of the dye composition and the developer composition has a pH value of 5.0 to 8.3, preferably 6.0 to 8.0, more preferably 6.2 to 7.8, and even more preferably 6.3 to 7.5.

[0130] Preferably, the weight ratio of the dye composition to the developer composition ranges from 5:1 to 0.2:1, preferably from 3:1 to 0.3:1, more preferably from 2:1 to 0.5:1, even more preferably from 1.5:1 to 0.75:1, and still more preferably from 1.2:1 to 0.8:1. According to the present invention, the pH value of the mixture of the dye composition and the developer composition is measured after the dye composition and the developer composition in the dyeing kit are mixed and form a homogeneous mixture. Preferably, the pH value is measured immediately after the formation of the homogeneous mixture, preferably at 30 minutes, more preferably at 20 minutes, and most preferably at 10 minutes.

[0131] Preferably, the colorant composition and the developer composition are placed in separate containers, and they are mixed before use, preferably 2 hours or less before use, more preferably 1 hour or less before use, and even more preferably 30 minutes or less before use.

[0132] By means of the specific amounts of antioxidant in the dye composition and oxidant in the developer composition, and the pH value of the mixture of the dye composition and the developer composition, the dyeing kit of the present invention can effectively avoid staining and can be stored stably at a high temperature for a long time.

[0133] In a preferred embodiment, the present invention relates to a dyeing kit, comprising:

[0134] a) a colorant composition comprising, in relation to the total weight of the colorant composition:

[0135] al) of 1.5% by weight to 10% by weight of at least one antioxidant, and

[0136] a2) from 0.05% by weight to 15% by weight of at least one oxidative dye comprising at least one oxidation base and at least one coupler; and

[0137] b) a developer composition comprising:

[0138] bl) from 0.5% by weight to 10% by weight of at least one oxidant, relative to the total weight of the developer composition;

[0139] wherein the mixture of the colorant composition and the developer composition has a pH value of 5.0 to 8.3.

[0140] In a preferred embodiment, the present invention relates to a dyeing kit, comprising:

[0141] a) a colorant composition comprising, in relation to the total weight of the colorant composition:

[0142] (a) from 1.5% by weight to 8% by weight of at least one antioxidant, relative to the total weight of the colorant composition, wherein the antioxidant is selected from ascorbic acid compounds, tocopherol compounds, salicylic acid compounds, sulfur-containing compounds, phenylpropanoids, and mixtures thereof, and

[0143] a2) from 0.1% by weight to 10% by weight of at least one oxidative dye comprising at least one oxidation base and at least one coupler,

[0144] wherein the oxidation base is selected from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and their addition salts, and mixtures thereof, and the coupler is selected from meta-phenylenediamines, meta-aminophenols, diaminophenols and their ether derivatives, meta-diphenols, naphthalene-based couplers, heterocyclic couplers, and their addition salts, and mixtures thereof; and

[0145] b) a developer composition comprising:

[0146] bl) from 0.5% by weight to 7% by weight of at least one oxidant, relative to the total weight of the developer composition, wherein the oxidant is selected from hydrogen peroxide, alkali metal bromates, inorganic alkali metal peroxides, organic peroxides, inorganic perhydrate salts, polymer complexes capable of releasing hydrogen peroxide, and mixtures thereof;

[0147] wherein the mixture of the colorant composition and the developer composition has a pH value of 6.0 to 8.0.

[0148] In a preferred embodiment, the present invention relates to a dyeing kit, comprising:

[0149] a) a colorant composition comprising, in relation to the total weight of the colorant composition:

[0150] al) from 1.5% by weight to 5% by weight of at least one antioxidant, which is selected from ascorbic acid, erythorbic acid, potassium sulfite, sodium sulfite, and mixtures thereof, relative to the total weight of the colorant composition, and

[0151] a2) at least one oxidative dye, comprising from 0.5% by weight to 5% by weight of an oxidation base of at least one para-phenylenediamine, and 0.5% to 3% by weight of couplers of at least one meta-aminophenol and at least one hydroxybenzomorpholine; preferably 0.5% to 5% by weight of an oxidation base of toluene-2,5-diamine, and 0.5% to 3% by weight of couplers of l-hydroxy-3-aminobenzene and 6-hydroxybenzomorpholine; and

[0152] b) a developer composition comprising:

[0153] bl) of 0.5% by weight to 5% by weight of hydrogen peroxide, relative to the total weight of the developer composition;

[0154] wherein the mixture of the colorant composition and the developer composition has a pH value of 6.3 to 7.5. Method and use

[0155] The dyeing kit according to the present invention is used in a process for dyeing keratin fibers, preferably hair.

[0156] By means of the dyeing kit as defined above, stains can be effectively avoided, even after a long period of storage of the dyeing kit, even at a high temperature.

[0157] According to the second aspect, the present invention relates to a process for dyeing keratin fibers, preferably hair, comprising:

[0158] a) the mixture of the colorant composition and the developer composition according to the first aspect; and

[0159] b) applying the mixture obtained in step a) to the keratin fibers; and

[0160] Preferably, the dye composition is mixed with the developer composition just before applying the resulting mixture to the keratin fibers, for example, within 30 minutes, preferably within 20 minutes, more preferably within 10 minutes before applying the resulting mixture to the keratin fibers. In this way, staining can be better avoided.

[0161] Preferably, in step b), the mixture obtained in step a) is applied to wet keratin fibers.

[0162] Preferably, the process further includes step c) of rinsing the keratin fibers with water after step b).

[0163] Preferably, the process further comprises step c) of rinsing the keratin fibers with water after step b), and step d) of drying the keratin fibers after step c).

[0164] The present invention is illustrated in more detail by the examples described below, which are given by way of non-limiting illustration. EXAMPLES

[0165] The main raw materials used, their trade names and their suppliers are listed in Table 1.

[0166] [Tables 1] INCI Name Trade Name Supplier ACRYLATES COPOLYMER (ACRYLATES COPOLYMER) CARBOPOL® AQUA™ SF-1 POLYMER LUBRIZOL PEG-40 HYDROGENATED CASTOR OIL (PEG-40 HYDROGENATED CASTOR OIL) EUMULGIN™ CO 40-CMB BASF ERYTHORBIC ACID ERYTHORBIC ACID JIANGXI DEXING SODIUM ISOVITAMI NC GLUTAMATE DIACETATE TETRASODIUM (TETRASODIUM GLUTAMATE DIACETATE) DISSOLVINE GL-47 -S AKZO NOBEL (NO URYON) TOLUENE-2,5-DIAMINE (TOLUENE-2,5-DIAMINE) IMEXINE OD NOVEAL Meta-AMINOPHENOL 3-AMINOPHENOL CHANGSHU LEAG UE CHEMICAL Tetrasodium etidronate, pure tetrasodium etidronate, aroma of Holly Li-Mited sclerotinia gum, Actigum CS 11 QD I Cargill

[0167] Comparative examples 1 to 4 and Inventive examples 1 to 3

[0168] The compositions according to comparative examples (EC.) 1 to 4 and inventive examples (Ex.) 1 to 3 comprising the ingredients indicated in Table 2 were prepared, all quantities being expressed as percentages by weight of ingredient relative to the total weight of each composition, unless otherwise indicated - MA: active substance.

[0169] [Tables2] Phases Components Ex. 1 Ex. 2 Ex. 3 EC. 1 EC. 2 CE. 3 EC. 4. Dye Compositions A. WATER QS10 0 QS10 0 QS10 0 QS10 0 QS10 0 QS10 0 QS10 0 QS10 0 ACRYLATES COPOLYMER 1.8 (MA) 1.8 (MA) 1.8 (MA) 1.8 (MA) 1.8 (MA) 1.8 (MA) 1.8 (MA) B. TETRA SODIUM GLUTAMATE DIACETATE 0.5 (MA) 0.5 (MA) 0.5 (MA) 0.5 (MA) 0.5 (MA) 0.5 (MA) 0.5 (MA) 0.5 (MA) C. SODIUM SULFITE 0.8 1.2 - - - 0.3 - ERYTHORBIC ACID 1 1 2 2 2 0.4 1 TOLUENE-2,5-DI AMINE 1.5 (MA) 1.5 (MA) 1.5 (MA) 1.5 (MA) 1.5 (MA) 1.5 (MA) 1.5 (MA) HYDROXYBENZ OMORPHOLINE 0.6 0.6 0.6 0.6 0.6 0.6 0.6 Meta-AMINOPHENOL 1.1 1.1 1.1 1.1 1.1 1.1 1.1 D PEG-40 HYDROGENATED CASTOR OIL 2 2 2 2 2 2 2 pH values ​​of dye compositions, corrected with ethanolamine 7.3 7.8 8.4 9.2 8.5 8.3 8.4 Developer compositions HYDROGEN PEROXIDE 0.5 (MA) 3 (MA) 3 (MA) 3 (MA) 3 (MA) 1.5 (MA 1.5 (MA) TETRASODIC ETIDRONATE 0.06 (MA) 0.06 (MA) 0.06 (MA) 0.06 (MA) 0.06 (MA) 0.06 (MA) 0.06 (MA) GUM OF SCLEROTIC 1 1 1 1 1 1 1 WATER QS10 0 QS10 0 QS10 0 QS10 0 QS10 0 QS10 0 QS10 0 pH values ​​of developer compositions, corrected by phosphoric acid 2.2 2.1 2.2 2.2 2.1 2.2 2.2 Preparation process

[0170] 1) The colorant compositions were prepared by a process comprising the Next steps:

[0171] i) adding the components of phase A into a first beaker, and stirring them until homogeneous to form the premix 1-1;

[0172] ii) adding each component of phase B into premix 1-1 and stirring them until homogeneous to form premix 1-2;

[0173] iii) the addition of the components of phase C to premix 1-2, and their agitation until homogeneous to form premix 1-3; and

[0174] iv) the addition of the component of phase D to the premix 1-3, and their agitation until homogeneous to form the premix 1-4; and

[0175] v) the correction of the pH value of premix 1-4 using ethanolamine to obtain the final dye compositions.

[0176] 2) The developer compositions were prepared by a process comprising the Next steps:

[0177] i) the addition of sclerotium gum and water in a second beaker, and their agitation until homogeneous to form the premix 2-1;

[0178] ii) the addition of tetrasodium etidronate to the premix 2-1, and their agitation until homogeneous to form the premix 2-2;

[0179] iii) the addition of hydrogen peroxide to the premix 2-2, and their agitation until homogeneous to form the premix 2-3; and

[0180] iv) the correction of the pH value of premix 2-3 using phosphoric acid to obtain the final developer compositions.

[0181] Clear, colourless water (SFCW) performance test

[0182] The clear colorless water (SFCW) performance test was conducted according to the following procedure:

[0183] 1) Mix 2 g of the colorant composition and 2 g of the developer composition until homogeneity for each of the inventive examples 1 to 3 and the comparative examples 1 to 4, in which the pH value of each mixture has been recorded in Table 3;

[0184] [Tables3] Ex. 1 Ex. 2 Ex. 3 EC. 1 EC. 2 EC. 3 EC. 4 pH value of mixtures of dye and developer compositions 6.5 6.8 7.2 8.5 7.2 7.2 7.2

[0185] 2) apply 4 g of each of the mixtures obtained to a strand of damp hair of 1 g;

[0186] 3) After 30 minutes, rinse each strand of hair in a beaker with 400 ml of water; and

[0187] 4) compare each of the aspects of the rinsing water in the beakers obtained from inventive examples 1 to 3 and comparative examples 1 to 4 with the internal atlas as shown in [Fig. 1] and give scores for each of the rinse water (scores: 0~10, the higher the score, the better the SFCW performance; in which a score of 10 meant that the rinse water was as clean as clean water, a score of 1 meant that the rinse water was as dark as black ink). SFCW Performance Stability Test

[0188] The SFCW performance stability test was conducted according to the following procedure:

[0189] 1') age each of the mixtures from step 1) of the SFCW performance test at 45 °C for 2 months;

[0190] 2') apply 4 g of each of the aged mixtures to a strand of damp hair of 1 g;

[0191] 3') After 30 minutes, rinse each of the hair strands in a beaker with 400 ml of water; and

[0192] 4') compare each of the aspects of the rinsing water in the beakers obtained from aged mixtures of inventive examples 1 to 3 and comparative examples 1 to 4 with the internal atlas as shown in [Fig.1] and give scores for each of the rinse waters, in which the standard for assigning scores was the same as that for the above test of clear colorless water performance (SFCW).

[0193] The results of the clear colorless water (SFCW) performance test and the SFCW performance stability test were presented in Table 4.

[0194] [Tables4] Properties Ex. 1 Ex. 2 Ex. 3 EC. 1 EC. 2 EC. 3 EC. 4 SFCW Performance (color score) 10 10 9 5 4 2 3 SFCW Performance Stability Test (color score after aging) 8 8 7 3 2 1 1

[0195] From the data in Table 4, it can be seen that only the dye kits of inventive examples 1 to 3, comprising dye compositions including 1.5% by weight or more of the antioxidant and developer compositions including 0.5 to 10% by weight of the oxidant, and having pH values ​​of 8.3 or less from the mixtures of the dye compositions and the developer compositions, can obtain scores greater than 6 for each of the SFCW performance test and the SFCW performance stability test.

[0196] In contrast, the dye kits in comparative examples 1 to 4, which do not meet at least one of the following conditions: 1) 1.5% by weight or more of the antioxidant, 2) 0.5 to 10% by weight of the oxidant, and 3) pH values ​​of 8.3 or less for the mixture of the dye composition and the developer composition, obtain scores of less than 6 for each of the SFCW performance test and the SFCW performance stability test. Thus, it is demonstrated that the dye kit of the present invention can effectively prevent staining and can be stored stably even at a high temperature, for example, 45°C, for a long period, for example, 2 months.

Claims

Demands

1. Dye kit, comprising: a) a dye composition, comprising: a1) 1.5% by weight or more of at least one antioxidant, relative to the total weight of the dye composition; a2) at least one oxidative dye; and b) a developer composition comprising: b1) from 0.5% by weight to 10% by weight of at least one oxidant, relative to the total weight of the developer composition; wherein the mixture of the dye composition and the developer composition has a pH value of 8.3 or less.

2. Dyeing kit according to claim 1, wherein the antioxidant is selected from ascorbic acid compounds, tocopherol compounds, salicylic acid compounds, sulfur-containing compounds, phenylpropanoids, and mixtures thereof; preferably, the antioxidant is selected from ascorbic acid compounds, sulfur-containing compounds, and mixtures thereof; more preferably, the antioxidant is selected from ascorbic acids, alkali metal or alkaline earth metal or ammonium sulfites and bisulfites, and mixtures thereof; still more preferably, the antioxidant is selected from ascorbic acid, erythorbic acid, potassium sulfite, sodium sulfite, and mixtures thereof.

3. Dyeing kit according to any one of the preceding claims, wherein the oxidative dye comprises at least one oxidizing base, and optionally at least one coupler, and preferably both at least one oxidizing base and at least one coupler, wherein the oxidizing base is preferably selected from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and their addition salts, and mixtures thereof, and the coupler is preferably selected from meta-phenylenediamines, meta-aminophenols, diaminophenols and their ether derivatives, meta-diphenols, naphthalene-based couplers, heterocyclic couplers, and their addition salts, and mixtures thereof; and more preferably selected from meta-

4.

5. unsubstituted aminophenol, meta-aminophenols substituted with one or two alkyl groups in Ci-C4 and / or one or two halogens, unsubstituted meta-diphenol, meta-diphenols substituted with one or two alkyl groups in CrC4 and / or one or two halogens, diaminophenol ethers, diaminobenzenes, naphthols, hydroxyindoles, amino-substituted hydroxypyridines, hydroxybenzomorpholines, and mixtures thereof; Preferably, the oxidative tincture comprises at least one para-phenylenediamine, at least one meta-aminophenol and at least one hydroxybenzomorpholine; more preferentially, the oxidative dye comprises toluene-2,5-diamine, l-hydroxy-3-aminobenzene and 6-hydroxybenzomorpholine; in which, the oxidative dye is present in an amount ranging from 0.05% by weight to 15% by weight, preferably from 0.1% by weight to 10% by weight, and more preferably from 1% by weight to 8% by weight, relative to the total weight of the dye composition; preferably, the oxidation base is present in an amount ranging from 0.05% by weight to 10% by weight, preferably from 0.1% by weight to 8% by weight, and more preferably from 0.5% by weight to 5% by weight, relative to the total weight of the colorant composition; Preferably, the coupler is present in an amount ranging from 0.05% by weight to 8% by weight, preferably from 0.1% by weight to 5% by weight, and more preferably from 0.5% by weight to 3% by weight, relative to the total weight of the dye composition. Dyeing kit according to any one of the preceding claims, wherein the oxidant is selected from hydrogen peroxide, alkali metal bromates, inorganic alkali metal peroxides, organic peroxides, inorganic perhydrate salts, polymer complexes capable of releasing hydrogen peroxide, and mixtures thereof; Preferably, the oxidant is chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persulfates, perborates, and mixtures thereof; Preferably, the oxidant is hydrogen peroxide. Dyeing kit according to any one of the preceding claims, wherein the dye composition comprises at least one nonionic surfactant, which is preferably chosen among polyoxyalkylated hydrogenated castor oils; polyoxyalkylated fatty acid esters of glycerol or optionally polyoxyalkylated fatty acid esters of polyglycerol; polyoxyalkylated fatty alcohol ethers; and mixtures thereof; more preferably, the non-ionic surfactant is chosen from PEG-25 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-35 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-45 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-54 hydrogenated castor oil, PEG-55 hydrogenated castor oil, PEG-60 hydrogenated castor oil, and mixtures thereof; Even more preferentially, the non-ionic surfactant is PEG-40 hydrogenated castor oil; in which, the non-ionic surfactant is preferably present in an amount ranging from 0.01% by weight to 20% by weight, preferably from 0.1% by weight to 10% by weight, and more preferably from 0.5% by weight to 5% by weight, relative to the total weight of the colorant composition.

6. Dye kit according to any one of the preceding claims, wherein the dye composition comprises at least one acrylate copolymer, preferably the acrylate copolymer is selected from crosslinked copolymers of acrylic acid and / or methacrylic acid and one of their esters comprising a hydrocarbyl group having 6 or fewer carbon atoms, preferably a CrC alkyl ester 4, more preferably, the acrylate copolymer is chosen from the crosslinked copolymers of methacrylic acid and alkyl acrylate in Ci-C4; in which, the acrylates copolymer is preferably present in an amount ranging from 0.01% by weight to 15% by weight, preferably from 0.1% by weight to 12% by weight, and more preferably from 1% by weight to 10% by weight, relative to the total weight of the colorant composition.

7. Dyeing kit according to any one of the preceding claims, wherein the dye composition comprises at least one first pH corrector, which is preferably selected from the bases; Preferably, the first pH adjuster is selected from aqueous ammonia, alkali metal carbonates or bicarbonates, organic amines with a pKb at 25 °C of not less than 12, preferably not less than 10, and more preferably not less than 6, and mixtures thereof; more preferably, the first pH adjuster is selected from alkanolamines, preferably comprising a primary, secondary, or tertiary amine function and one or more linear or branched Ci-C8 alkyl groups bearing one or more hydroxyl radicals. Even more preferably, the first pH adjuster is ethanolamine; wherein the first pH adjuster is preferably added to correct the pH value of the dye composition in the range of 6.5 to 9.5, preferably from 6.8 to 9.0, and more preferably from 7.0 to 8.8;and / or the developer composition includes at least one second pH corrector, which is preferably selected from acids; preferably, the second pH corrector is selected from mineral acids, carboxylic acids, sulfonic acids, phosphonic acids, and mixtures thereof; more preferably, the second pH corrector is selected from hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, acetic acid, tartaric acid, citric acid, lactic acid, and mixtures thereof; even more preferably, the second pH corrector is phosphoric acid, in which the second pH corrector is preferably added to correct the pH value of the developer composition in the range of 1.5 to 3.0, preferably from 1.8 to 2.7, and more preferably from 2.0 to 2.

4.

8. Dyeing kit according to any one of the preceding claims, wherein the dye composition and / or the developer composition comprises at least one chelating agent, preferably selected from ethylenediaminetetraacetic acid (EDTA), tripotassium phosphate, trisodium phosphate, disodium silicate, dipotassium silicate, sodium phytate, tetrasodium etidronate, tetrasodium pyrophosphate, tetramethylenediamine pentasodium phosphonate, tetrasodium glutamate diacetate, and mixtures thereof; more preferably, the chelating agent is chosen from tetrasodium glutamate diacetate, tetrasodium etidronate and one of their mixtures; in which, the chelating agent is preferably present in an amount ranging from 0.01% by weight to 8% by weight, preferably from 0.05% by weight to 5% by weight, and more preferably from 0.1% by weight to 3% by weight, relative to the total weight of the dye composition; and / or the chelating agent is preferably present in an amount ranging from 0.01% by weight to 3% by weight, preferably from 0.02% by weight to 2% by weight, more preferably from 0.05% by weight to 1% by weight, relative to the total weight of the developer composition.

9. Dyeing kit according to any one of the preceding claims, wherein the mixture of the dye composition and the developer composition has a pH value of 5.0 to 8.3, preferably 6.0 to 8.0, more preferably 6.2 to 7.8, and even more preferably 6.3 to 7.5, and / or the weight ratio of the dye composition to the developer composition ranges from 5:1 to 0.2:1, preferably 3:1 to 0.3:1, more preferably 2:1 to 0.5:1, even more preferably 1.5:1 to 0.75:1, and still more preferably 1.2:1 to 0.8:

1.

10. Dyeing kit, including: a) a colorant composition comprising, in relation to the total weight of the colorant composition: (a) 1.5% to 5% by weight of at least one antioxidant, which is selected from ascorbic acid, erythorbic acid, potassium sulfite, sodium sulfite, and mixtures thereof, relative to the total weight of the dye composition, and (a2) at least one oxidative dye, comprising 0.5% to 5% by weight of an oxidation base of at least one para-phenylenediamine, and 0.5% to 3% by weight of couplers of at least one meta-aminophenol and at least one hydroxybenzomorpholine; preferably 0.5% to 5% by weight of an oxidation base of toluene-2,5-diamine, and 0.5% to 3% by weight of couplers of l-hydroxy-3-aminobenzene and 6-hydroxybenzomorpholine; and b) a developer composition comprising: bl) 0.5% by weight to 5% by weight of hydrogen peroxide, relative to the total weight of the developer composition; in which the mixture of the colorant composition and the developer composition has a pH value of 6.3 to 7.5.

Images