Dye kit
The dye kit with specific antioxidant and oxidant levels at a controlled pH addresses staining and storage issues in hair dyeing, ensuring effective and stable dye application.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- LOREAL SA
- Filing Date
- 2024-12-24
- Publication Date
- 2026-07-02
AI Technical Summary
Existing hair dyeing methods face challenges in preventing unwanted staining and require stable storage at elevated temperatures for extended periods, especially with oxidative dyeing compositions.
A dye kit comprising a colorant composition with at least 1.5% antioxidant and a developer composition with 0.5-10% oxidant, maintained at a pH of 8.3 or lower, to prevent staining and ensure stable storage.
The dye kit effectively prevents staining and allows stable storage at elevated temperatures, enhancing the durability and application of hair dye products.
Smart Images

Figure PCTCN2024141669-FTAPPB-I100001 
Figure PCTCN2024141669-FTAPPB-I100002 
Figure PCTCN2024141669-FTAPPB-I100003
Abstract
Description
DYE KITTECHNICAL FIELD
[0001] The present invention relates to a dye kit. Preferably, the present invention relates to a dye kit for dyeing keratin fibers, preferably hairs. The present invention also relates to a process for dyeing keratin fibers, preferably hairs.BACKGROUND ART
[0002] Many people have for a long time sought to modify the color of their hair, and especially to dye it in order to, for example, mask their grey hair.
[0003] "Permanent" dyeing methods, also known as oxidative dyeing, which use colorant compositions containing oxidative dye precursors, generally referred to as oxidation bases, have been developed for dyeing human keratin fibers in a long-lasting manner. These oxidation bases are colorless or weakly colored compounds, which, when combined with oxidants, may give rise to colored compounds via a process of oxidative condensation.
[0004] Consumers desire to dye only the target area. However, when dyeing hair, some other areas may be undesiredly dyed (stained) , such as hands, face, ears and the like. Thus, consumers have to pay more attention to prevent staining.
[0005] Further, there are also challenges to stably store the dyeing products, especially at an elevated temperature and / or for a long period of time.
[0006] Therefore, there is a need for a dyeing product, which can efficiently prevent staining and can be stored stably at an elevated temperature for a long period of time.SUMMARY OF THE INVENTION
[0007] The inventors have found that such a need can be achieved by the dye kit according to the present invention.
[0008] According to a first aspect, the present invention provides a dye kit comprising:
[0009] a) a colorant composition, comprising:
[0010] a1) 1.5 wt. %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] b1) from 0.5 wt. %to 10 wt. %of at least one oxidant, relative to the total weight of the developer composition;
[0014] wherein 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 the antioxidant in the colorant composition and the oxidant in the developer composition, and the pH value of the mixture of the colorant composition and the developer composition, the dye kit of the present invention can efficiently prevent staining and can be stored stably at an elevated temperature for a long period of time.
[0016] According to a second aspect, the present invention provides a process for dyeing keratin fibers, preferably hairs, comprising:
[0017] a) mixing the colorant composition and the developer composition according to the first aspect; and
[0018] b) applying the mixture obtained from step a) on the keratin fibers.
[0019] Other subjects and characteristics, aspects and advantages of the present invention will emerge even more clearly on reading the detailed description and the examples that follow.BRIEF DESCRIPTION OF DRAWINGS
[0020] Fig. 1 is a picture of standard atlas scale for estimating the appearances of rinsing water obtained from the embodiments of the present invention.DETAILED DESCRIPTION OF THE INVENTION
[0021] In that which follows and unless otherwise indicated, the limits of a range of values are included within this range, in particular in the expressions “of between” and “ranging from... to... ” .
[0022] The articles “a” and “an” , as used herein, mean one or more when applied to any feature in embodiments of the present invention described in the specification and claims. The use of “a” and “an” does not limit the meaning to a single feature unless such a limit is specifically stated. Moreover, the expression “at least one” used in the present description is equivalent to the expression “one or more” .
[0023] Throughout the present application, the expression “comprising” is to be interpreted as encompassing all specifically mentioned features as well optional, additional, unspecified ones. As used herein, the use of the term “comprising” also discloses the embodiment wherein no material features or even no features other than the specifically mentioned features are present (such as “consisting essentially of” and “consisting of” ) . In the case of “consisting essentially of” , any additional compositions, materials, and / or components that materially affect the basic and novel characteristics are excluded from such an embodiment, but any compositions, materials and / or components that do not materially affect the basic and novel characteristics can be included in the embodiment.
[0024] Unless otherwise specified, all numerical values expressing amount of ingredients and the like used in the description and claims are to be understood as being modified by the term “about” . Accordingly, unless indicated to the contrary, the numerical values and parameters described herein are approximate values which are capable of being changed according to the desired performance obtained as required. The term “about” denoting a certain value is intended to denote a range within±5%of the value, e.g., ±3%, ±2%, ±1%, and±0.5%of the value.
[0025] As used herein, the term “keratin fiber (s) ” refers to hairs, eyelashes, eyebrows, or body hairs. Preferably, the keratin fiber (s) means hairs, and preferably human hairs.
[0026] Colorant composition
[0027] The dye kit according to the present invention comprises a colorant composition.
[0028] Antioxidant
[0029] The colorant composition of the present invention comprises an amount of 1.5 wt. %or more of at least one antioxidant, relative to the total weight of the colorant composition.
[0030] As used herein, the term “antioxidant” refers to a molecule that inhibits the oxidation of another molecule by itself being oxidized.
[0031] According to the present invention, the antioxidant may be chosen from ascorbic acid compounds, tocopherol compounds, salicylic acid compounds, sulfur-containing compounds, phenylpropanoids, and mixtures thereof.
[0032] The ascorbic acid compound may be chosen 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, it is also possible to use plants containing a large amount of vitamin C, such as extracts of myrciaria dubia, acerola, emblica officinalis, and bioflavonoids from rose hips and citrus, including water-soluble bioflavonoids such as hesperidin methyl chalcone.
[0033] The tocopherol compound may be chosen 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.
[0034] The salicylic acid compound may be chosen from salicylic acid, salicylic acid salts, and mixtures thereof. One example of the salicylic acid compound is sodium salicylate.
[0035] The sulfur-containing compound may be chosen from sulfite diesters of formula R-O-SO2-R’ , with R and R’ denoting C1-C10 alkyl groups. Furthermore, the sulfur-containing compound may be chosen from alkali metal or alkaline-earth metal or 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-acetyl cysteine, and glutathione.
[0036] The phenylpropanoids may be chosen from cinnamic acid and derivatives thereof, caffeic acid, ferulic acid, including trans-ferulic acid, 5-hydroxyferulic acid, sinapic acid, coumarin, coniferyl alcohol, sinapyl alcohol, eugenol, chavicol, baicalein, p-coumaric acid, sinapic acid, and mixtures thereof. Without limiting the mode of action of the present invention, phenylpropanoids can neutralize free radicals.
[0037] 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.
[0038] Preferably, the antioxidant is chosen from ascorbic acid compounds, sulfur-containing compounds, and mixtures thereof. More preferably, the antioxidant is chosen from ascorbic acids, alkali metal or alkaline-earth metal or ammonium sulfites and bisulfites, and mixtures thereof. Even more preferably, the antioxidant is chosen from ascorbic acid, erythorbic acid, potassium sulfite, sodium sulfite, and mixtures thereof.
[0039] Advantageously, the antioxidant is present in an amount ranging from 1.5 wt. %to 10 wt.%, preferably from 1.5 wt. %to 8 wt. %, and more preferably from 1.5 wt. %to 5 wt. %, relative to the total weight of the colorant composition.
[0040] Oxidative dye
[0041] The colorant composition according to the present invention comprises at least one oxidative dye.
[0042] Preferably, the oxidative dye that may be used in the present invention comprises at least one oxidation base, and optionally at least one coupler.
[0043] Preferably, the oxidation base is chosen from para-phenylenediamines, bis(phenyl) alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and the addition salts thereof, and mixtures thereof.
[0044] The para-phenylenediamine may 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 (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-phenylenediamine, 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, N- (ethyl-β-hydroxyethyl) -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, 2-thienyl-para-phenylenediamine, 2-β-hydroxyethylamino-5-aminotoluene, and mixtures thereof.
[0045] The bis (phenyl) alkylenediamine may be selected from N, N'-bis (β-hydroxyethyl) -N,N'-bis (4'-aminophenyl) -1, 3-diaminopropanol, 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 mixtures thereof.
[0046] The para-aminophenol may 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- (β-hydroxyethyl-aminomethyl) phenol, 4-amino-2-fluorophenol, and mixtures thereof.
[0047] The ortho-aminophenol may be selected from 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol, 5-acetamido-2-aminophenol, and mixtures thereof.
[0048] The heterocyclic base is preferably chosen from pyridine derivatives, pyrimidine derivatives, pyrazole derivatives, and mixtures thereof.
[0049] Among the pyridine derivatives that may be mentioned are the compounds described, for example, in patents GB 1 026 978 and GB 1 153 196, for instance 2, 5-diaminopyridine, 2- (4-methoxyphenyl) amino-3-aminopyridine, 3, 4-diaminopyridine, and mixtures thereof.
[0050] Other pyridine derivatives that are useful in the present invention include, but are not limited to, 3-aminopyrazolo [1, 5-a] pyridine, pyrazolo [1, 5-a] pyridin-3-ylamine, 2- (acetylamino) pyrazolo [1, 5-a] pyridin-3-ylamine, 2- (morpholin-4-yl) pyrazolo [1, 5-a] pyridin-3-ylamine, 3-aminopyrazolo [1, 5-a] pyridine-2-carboxylic acid, 2-methoxypyrazolo [1, 5-a] pyridin-3-ylamine, (3-aminopyrazolo [1, 5-a] pyridin-7-yl)methanol, 2- (3-aminopyrazolo [1, 5-a] pyridin-5-yl) ethanol, 2- (3-aminopyrazolo [1, 5-a] pyridin-7-yl) ethanol, (3-aminopyrazolo [1, 5-a] pyridin-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-yl) pyrazolo [1, 5-a] pyridin-3-ylamine, pyrazolo [1, 5-a] pyridine-3, 5-diamine, 5- (morpholin-4-yl) pyrazolo [1, 5-a] pyridin-3-ylamine, 2- [ (3-aminopyrazolo [1, 5-a] pyridin-5-yl) (2-hydroxyethyl) amino] ethanol, 2- [ (3-aminopyrazolo [1, 5-a] pyridin-7-yl) (2-hydroxyethyl) amino] ethanol, 3-aminopyrazolo [1, 5-a] pyridin-5-ol, 3-aminopyrazolo [1, 5-a] pyridin-4-ol, 3-aminopyrazolo [1, 5-a] pyridin-6-ol, 3-aminopyrazolo [1, 5-a] pyridin-7-ol, and mixtures thereof.
[0051] Among the pyrimidine derivatives that may be mentioned are the compounds described, for example, in the 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 the tautomeric forms thereof, when a tautomeric equilibrium exists.
[0052] Among the pyrazole derivatives that may be mentioned 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 instance 4, 5-diaminopyrazole, 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-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, 1-methyl-3, 4, 5-triaminopyrazole, 3, 5-diamino-1-methyl-4-methylaminopyrazole, 4, 5-diamino-1- (β-methoxyethyl) pyrazole, and 3, 5-diamino-4- (β-hydroxyethyl) amino-1-methylpyrazole, and mixtures thereof.
[0053] Preferably, the coupler is chosen from meta-phenylenediamines, meta-aminophenols, diaminophenols and ether derivatives thereof, meta-diphenols, naphthalene-based couplers, heterocyclic couplers, and the addition salts thereof, and mixtures thereof.
[0054] More preferably, the coupler is chosen from unsubstituted meta-aminophenol, meta-aminophenols substituted with one or two C1-C4 alkyl groups and / or one or two halogens, unsubstituted meta-diphenol, meta-diphenols substituted with one or two C1-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 herein, the term "diaminophenol ether" or "diaminophenol ether derivative" means an ether obtained from the reaction of the hydroxyl group linked to the benzene of diaminophenol with another compound having at least one hydroxyl group or per se.
[0055] Even more preferably, the coupler is selected from 1-hydroxy-3-aminobenzene, 1-methyl-2-hydroxy-4-aminobenzene, 1, 3-dihydroxybenzene, 1, 3-dihydroxy-2-methylbenzene, 4-chloro-1, 3-dihydroxybenzene, 2, 4-diamino-1- (β-hydroxyethyloxy) benzene, 2-amino-4- (β-hydroxyethylamino) -1-methoxybenzene, 1,3-bis (2, 4-diaminophenoxy) propane, 1, 3-diaminobenzene, 3-ureidoaniline, 3-ureido-1-dimethylaminobenzene, α-naphthol, 2-methyl-1-naphthol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine, 6-hydroxybenzomorpholine, and mixtures thereof.
[0056] The addition salts of the oxidation bases and couplers that may be used within the context of the invention may be chosen from the addition salts with an acid, such as the hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates, and acetates.
[0057] Preferably, the oxidative dye according to the present invention comprises at least one oxidation base and at least one coupler.
[0058] 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.
[0059] Even more preferably, the oxidative dye according to the present invention comprises toluene-2, 5-diamine, 1-hydroxy-3-aminobenzene, and 6-hydroxybenzomorpholine.
[0060] Advantageously, the oxidative dye is present in an amount ranging from 0.05 wt. %to 15 wt. %, preferably from 0.1 wt. %to 10 wt. %, and more preferably from 1 wt. %to 8 wt. %, relative to the total weight of the colorant composition.
[0061] If present, the oxidation base is present in an amount ranging from 0.05 wt. %to 10 wt.%, preferably from 0.1 wt. %to 8 wt. %, and more preferably from 0.5 wt. %to 5 wt. %, relative to the total weight of the colorant composition.
[0062] If present, the coupler is present in an amount ranging from 0.05 wt. %to 8 wt. %, preferably from 0.1 wt. %to 5 wt. %, and more preferably from 0.5 wt. %to 3 wt. %, relative to the total weight of the colorant composition.
[0063] Nonionic surfactant
[0064] The colorant composition of the present invention may comprise at least one nonionic surfactant.
[0065] According to the present invention, the nonionic surfactant may be chosen from polyoxyalkylenated and / or polyglycerylated nonionic surfactants, and preferably polyoxyethylenated and / or polyglycerylated nonionic surfactants.
[0066] Preferably, the nonionic surfactant is chosen from polyoxyalkylenated hydrogenated castor oils; polyoxyalkylenated fatty acid esters of glycerol or optionally polyoxyalkylenated fatty acid esters of polyglycerol; polyoxyalkylenated fatty alcohol ethers; and mixtures thereof.
[0067] According to the present invention, the polyoxyalkylenated hydrogenated castor oil may 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.
[0068] According to the present invention, the polyoxyalkylenated fatty acid ester of glycerol may be those including polyethylene glycol derivatives of a mixture of mono-, di-and tri-glycerides of caprylic and capric acids (preferably 2 to 30 ethylene oxide units) .
[0069] Further, the polyoxyalkylenated fatty acid ester of glycerol may be chosen from polyoxyethylenated derivatives of glyceryl esters of fatty acids and hydrogenated derivatives thereof.
[0070] According to the present invention, the fatty acid ester of polyglycerol may be chosen from polyglyceryl monolaurate comprising from 1 to 20 glycerol units, polyglyceryl monomyristate comprising from 1 to 20 glycerol units, polyglyceryl monocaprate comprising from 1 to 20 glycerol units, polyglyceryl monocaprylate comprising from 1 to 20 glycerol units, and mixtures thereof.
[0071] According to the present invention, the polyoxyalkylenated fatty alcohol ether may be chosen from those having a number of ethylene and / or propylene oxide (EO / PO) units ranging from 2 to 40.
[0072] Preferably, the nonionic surfactant is chosen from polyoxyalkylenated hydrogenated castor oils. More preferably, the nonionic 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 preferably, the nonionic surfactant is PEG-40 hydrogenated castor oil.
[0073] Advantageously, the nonionic surfactant is present in an amount ranging from 0.01 wt. %to 20 wt. %, preferably from 0.1 wt. %to 10 wt. %, and more preferably from 0.5 wt. %to 5 wt. %, relative to the total weight of the colorant composition.
[0074] Acrylates copolymer
[0075] The colorant composition of the present invention may comprise at least one acrylates copolymer.
[0076] According to the present invention, the acrylates copolymer may be chosen from crosslinked copolymers of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having 6 or less carbon atoms, preferably a C1-C4 alkyl ester.
[0077] Preferably, the acrylates copolymer is chosen from crosslinked copolymers of methacrylic acid and of a C1-C4 alkyl acrylate. The methacrylic acid is preferably present in an amount ranging from 20 wt. %to 80 wt. %, preferably from 25 wt. %to 70 wt. %and more preferably from 35 wt. %to 65 wt. %, relative to the total weight of the acrylates copolymer. The alkyl acrylate is preferably present in an amount ranging from 15 wt. %to 80 wt. %, preferably from 25 wt. %to 75 wt. %and more preferably from 35 wt. %to 65 wt.%, relative to the total weight of the acrylates copolymer. It is preferably chosen from methyl acrylate, ethyl acrylate and butyl acrylate, and more preferably ethyl acrylate.
[0078] The acrylates copolymer is preferably partially or totally crosslinked with at least one standard polyethylenically unsaturated crosslinking agent, for instance polyalkenyl ethers of sucrose or of polyols, 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 manufactured from unsaturated carboxylic acids. The content of crosslinking agent generally ranges from 0.01 wt. %to 5 wt. %, preferably from 0.03 wt. %to 3 wt. %and more preferably from 0.05 wt. %to 1 wt. %, relative to the total weight of the acrylates copolymer.
[0079] Mention may be made to the acrylates copolymer sold under the commercial name ACULYN by the company THE DOW CHEMICAL COMPANY and having the INCI name: Acrylates Copolymer. Mention may also be made to the methacrylic acid / ethyl acrylate crosslinked copolymer sold by the company LUBRIZOL under the trade name Carbopol Aqua SF1 Polymer and having the INCI name: Acrylates Copolymer.
[0080] Advantageously, the acrylates copolymer is present in an amount ranging from 0.01 wt.%to 15 wt. %, preferably from 0.1 wt. %to 12 wt. %, and more preferably from 1 wt. %to 10 wt. %, relative to the total weight of the colorant composition.
[0081] First pH adjuster
[0082] The colorant composition according to the invention may comprise at least one first pH adjuster.
[0083] Preferably, the first pH adjuster is chosen from bases.
[0084] According to the present invention, the first pH adjuster may be chosen from aqueous ammonia; alkali metal carbonates or bicarbonates; organic amines with a pKb at 25℃ of less than 12, preferably less than 10 and more preferably less than 6; and mixtures thereof, wherein the pKb corresponds to the function of highest basicity.
[0085] Preferably, the colorant composition according to the present invention can be free of or substantially free of aqueous ammonia.
[0086] Preferably, the organic amines are chosen from alkanolamines, preferably comprising a primary, secondary, or tertiary amine function, and one or more linear or branched C1-C8 alkyl groups bearing one or more hydroxyl radicals; polyoxyethylenated and / or polyoxypropylenated ethylenediamines; the compounds having the following formula:
[0087] in which W is a C1-C6 alkylene residue optionally substituted with a hydroxyl group or a C1-C6 alkyl group; Rx, Ry, Rz and Rt, which may be identical or different, independently represent a hydrogen atom or a C1-C6 alkyl, C1-C6 hydroxyalkyl or C1-C6 aminoalkyl group; and mixtures thereof.
[0088] More preferably, the first pH adjuster is chosen from alkanolamines, preferably comprising a primary, secondary, or tertiary amine function, and one or more linear or branched C1-C8 alkyl groups bearing one or more hydroxyl radicals.
[0089] Even more preferably, the pH adjuster is ethanolamine.
[0090] Advantageously, the first pH adjuster is added to adjust pH value of the colorant composition to the range from 6.5 to 9.5, preferably 6.8 to 9.0, and more preferably 7.0 to 8.8.
[0091] Chelating agent
[0092] The colorant composition of the present invention may comprise at least one chelating agent.
[0093] Preferably, the chelating agent is selected 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.
[0094] More preferably, the chelating agent is chosen from tetrasodium glutamate diacetate, tetrasodium etidronate and a mixture thereof.
[0095] Advantageously, the chelating agent is present in an amount ranging from 0.01 wt. %to 8 wt. %, preferably from 0.05 wt. %to 5 wt. %, and more preferably from 0.1 wt. %to 3 wt.%, relative to the total weight of the colorant composition.
[0096] Aqueous solvent
[0097] The colorant composition of the present invention may comprise at least one aqueous solvent.
[0098] Preferably, the aqueous solvent of the colorant composition according to the present invention is chosen from water; water-miscible or at least partially water-miscible compounds, for instance C2-C8 polyols, and monoalcohols, such as ethanol and isopropanol; and mixtures thereof.
[0099] The term “polyol” should be understood as meaning any organic molecule comprising at least two free hydroxyl groups. Examples of the C2-C8 polyols that may be mentioned 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.
[0100] Preferably, the colorant composition according to the present invention comprises water.
[0101] Advantageously, water is present in an amount ranging from 30 wt. %to 98 wt. %, preferably from 40 wt. %to 96 wt. %, and more preferably from 50 wt. %to 92 wt. %, relative to the total weight of the colorant composition.
[0102] Developer composition
[0103] The dye kit according to the present invention comprises a developer composition.
[0104] Oxidant
[0105] The developer composition according to the present invention comprises 0.5 wt.%to 10 wt. %of at least one oxidant, relative to the total weight of the developer composition.
[0106] The developer composition of the present invention comprises at least one oxidant for generally use as one of the active components of the developer composition. The term "oxidant" is intended to mean an oxidant other than atmospheric oxygen.
[0107] According to the present invention, the oxidant is preferably water-soluble. The term "water-soluble" is intended to characterize the capacity of a compound to dissolve in water, measured at 25℃, to a concentration at least equal to 0.1 g / l (production of 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 provided in aqueous solution or as a powder which is dissolved prior to use.
[0108] The oxidant may be hydrogen peroxide or other peroxy materials capable of yielding hydrogen peroxide.
[0109] 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.
[0110] Examples of the alkali metal bromate include, but are not limited to, sodium bromate (NaBrO3) and potassium bromate (KBrO3) .
[0111] Examples of the inorganic alkali metal peroxide include, but are not limited to, sodium peroxide and potassium peroxide.
[0112] 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.
[0113] The inorganic perhydrate salts may be used as monohydrates, tetrahydrates, and the like. Examples of the inorganic perhydrate salt 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 a mixture thereof.
[0114] One example of the polymer complex capable of releasing hydrogen peroxide is polyvinylpyrrolidone / H2O2, e.g., in the form of a powder.
[0115] More preferably, the oxidant is chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persulfates, perborates, and mixtures thereof.
[0116] Even more preferably, the oxidant is hydrogen peroxide.
[0117] Advantageously, the oxidant is present in an amount ranging from 0.5 wt. %to 9 wt.%, preferably from 0.5 wt. %to 7 wt. %, and more preferably from 0.5 wt. %to 5 wt. %, relative to the total weight of the developer composition.
[0118] Second pH adjuster
[0119] The developer composition of the present invention may comprise at least one second pH adjuster.
[0120] Preferably, the second pH adjuster is chosen from acids.
[0121] Preferably, the acid is chosen from mineral acids, carboxylic acids, sulfonic acids, phosphonic acids, and mixtures thereof. Examples of the acid 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.
[0122] More preferably, the second pH adjuster is phosphoric acid.
[0123] Advantageously, the second pH adjuster is added to adjust pH value of the developer composition to the range from 1.5 to 3.0, preferably 1.8 to 2.7, and more preferably 2.0 to 2.4.
[0124] Chelating agent
[0125] The developer composition of the present invention may comprise at least one chelating agent. For the type of the chelating agent which may be comprised in the developer composition, it has the same definitions as that in the above colorant composition.
[0126] The amount of the chelating agent in the retardant composition may be different from that in the colorant composition. Advantageously, the chelating agent is present in an amount ranging from 0.01 wt. %to 3 wt. %, preferably from 0.02 wt. %to 2 wt. %, and more preferably from 0.05 wt. %to 1 wt. %, relative to the total weight of the developer composition.
[0127] Thickening agent
[0128] The developer composition of the present invention may comprise at least one thickening agent.
[0129] Preferably, the thickening agent according to the present invention is chosen from polysaccharide thickening agent.
[0130] More preferably, the thickening agent is chosen from hydroxypropyl guar, carrageenan, xanthan gum, cellulose gum, cyclodextrin, sclerotium gum, polyvinyl alcohol, and mixtures thereof.
[0131] Even more preferably, the thickening agent is sclerotium gum.
[0132] Advantageously, the thickening agent is present in an amount ranging from 0.01 wt.%to 10 wt. %, preferably from 0.05 wt. %to 8 wt. %, and more preferably from 0.1 wt. %to 5 wt. %, relative to the total weight of the developer composition.
[0133] Aqueous solvent
[0134] The developer composition of the present invention may comprise at least one aqueous solvent.
[0135] Preferably, the aqueous solvent of the developer composition according to the present invention is chosen from water; water-miscible or at least partially water-miscible compounds, for instance C2-C8 polyols, and monoalcohols, such as ethanol and isopropanol; and mixtures thereof.
[0136] The term “polyol” should be understood as meaning any organic molecule comprising at least two free hydroxyl groups.
[0137] Preferably, the developer composition according to the present invention comprises water.
[0138] Advantageously, water is present in an amount ranging from 30 wt. %to 99.5 wt. %, preferably from 50 wt. %to 99 wt. %, and more preferably from 70 wt. %to 99 wt. %, relative to the total weight of the developer composition.
[0139] Additional ingredients
[0140] The colorant composition and developer composition according to the present invention may each independently comprise one or more additional ingredients, selected from those conventionally used in cosmetic products, and preferably dyeing products.
[0141] The compositions in accordance with the present invention may comprise any of the following additives: biological extracts; fragrances; active ingredients; and preservatives.
[0142] A person skilled in the art can adjust the type and amount of the 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 adversely affected by the additional ingredients.
[0143] Dye kit
[0144] The dye kit comprising the above colorant composition and developer composition as defined above is applicable for any dyeing products, preferably for dyeing hairs.
[0145] For the dye kit comprising a colorant composition and a developer composition according to the present invention, the antioxidant is present in an amount of 1.5 wt. %or more, relative to the total weight of the colorant composition, and the oxidant is present in an amount ranging from 0.5 wt. %to 10 wt. %, relative to the total weight of the developer composition, and the mixture of the colorant composition and the developer composition has a pH value of 8.3 or lower. Preferably, the mixture of the colorant composition and the developer composition has a pH value of 5.0-8.3, preferably 6.0-8.0, more preferably 6.2-7.8, and even more preferably 6.3-7.5.
[0146] Preferably, the weight ratio of the colorant 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 colorant composition and the developer composition is measured after the colorant composition and the developer composition in the dye kit are mixed and form a homogeneous mixture. Preferably, the pH value is measured just after the homogeneous mixture is formed, preferably within 30 minutes, more preferably within 20 minutes, and most preferably within 10 minutes.
[0147] 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.
[0148] By means of the specific amounts of the antioxidant in the colorant composition and the oxidant in the developer composition, and the pH value of the mixture of the colorant composition and the developer composition, the dye kit of the present invention can efficiently prevent staining and can be stored stably at an elevated temperature for a long period of time.
[0149] In one preferred embodiment, the present invention relates to a dye kit comprising:
[0150] a) a colorant composition, relative to the total weight of the colorant composition, comprising:
[0151] a1) from 1.5 wt. %to 10 wt. %of at least one antioxidant, and
[0152] a2) from 0.05 wt. %to 15 wt. %of at least one oxidative dye comprising at least one oxidation base and at least one coupler; and
[0153] b) a developer composition, comprising:
[0154] b1) from 0.5 wt. %to 10 wt. %of at least one oxidant, relative to the total weight of the developer composition;
[0155] wherein the mixture of the colorant composition and the developer composition has a pH value of 5.0-8.3.
[0156] In one preferred embodiment, the present invention relates to a dye kit comprising:
[0157] a) a colorant composition, relative to the total weight of the colorant composition, comprising:
[0158] a1) from 1.5 wt. %to 8 wt. %of at least one antioxidant, relative to the total weight of the colorant composition, wherein the antioxidant is chosen from ascorbic acid compounds, tocopherol compounds, salicylic acid compounds, sulfur-containing compounds, phenylpropanoids, and mixtures thereof, and
[0159] a2) from 0.1 wt. %to 10 wt. %of at least one oxidative dye comprising at least one oxidation base and at least one coupler,
[0160] wherein the oxidation base is chosen from para-phenylenediamines, bis (phenyl) alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and the addition salts thereof, and mixtures thereof, and the coupler is chosen from meta-phenylenediamines, meta-aminophenols, diaminophenols and ether derivatives thereof, meta-diphenols, naphthalene-based couplers, heterocyclic couplers, and the addition salts thereof, and mixtures thereof; and
[0161] b) a developer composition, comprising:
[0162] b1) from 0.5 wt. %to 7 wt. %of at least one oxidant, relative to the total weight of the developer composition, wherein 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;
[0163] wherein the mixture of the colorant composition and the developer composition has a pH value of 6.0-8.0.
[0164] In one preferred embodiment, the present invention relates to a dye kit comprising:
[0165] a) a colorant composition, relative to the total weight of the colorant composition, comprising:
[0166] a1) from 1.5 wt. %to 5 wt. %of at least one antioxidant, which is chosen from ascorbic acid, erythorbic acid, potassium sulfite, sodium sulfite, and mixtures thereof, relative to the total weight of the colorant composition, and
[0167] a2) at least one oxidative dye, comprising from 0.5 wt. %to 5 wt. %of an oxidation base of at least one para-phenylenediamine, and from 0.5 wt. %to 3 wt.%of couplers of at least one meta-aminophenol and at least one hydroxybenzomorpholine; preferably, from 0.5 wt. %to 5 wt. %of an oxidation base of toluene-2, 5-diamine, and from 0.5 wt. %to 3 wt. %of couplers of 1-hydroxy-3-aminobenzene and 6-hydroxybenzomorpholine; and
[0168] b) a developer composition, comprising:
[0169] b1) from 0.5 wt. %to 5 wt. %of hydrogen peroxide, relative to the total weight of the developer composition;
[0170] wherein the mixture of the colorant composition and the developer composition has a pH value of 6.3-7.5.
[0171] Process and use
[0172] The dye kit according to the present invention is used in a process for dyeing keratin fibers, preferably hairs.
[0173] By means of the dye kit as defined above, staining can be efficiently prevented, even after the dye kit is stored for a long period of time, even at an elevated temperature.
[0174] According to the second aspect, the present invention relates to a process for dyeing keratin fibers, preferably hairs, comprising:
[0175] a) mixing the colorant composition and the developer composition according to the first aspect; and
[0176] b) applying the mixture obtained from step a) on the keratin fibers; and
[0177] Preferably, the colorant composition is mixed with the developer composition just before applying the obtained mixture on the keratin fibers, e.g., within 30 minutes, preferably within 20 minutes, more preferably within 10 minutes before applying the obtained mixture on the keratin fibers. In this way, staining can be better prevented.
[0178] Preferably, in step b) , the mixture obtained from step a) is applied on wet keratin fibers.
[0179] Preferably, the process further comprises step c) of rinsing the keratin fibers with water after step b) .
[0180] 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) .
[0181] The present invention is illustrated in greater detail by the examples described below, which are given as non-limiting illustrations.
[0182] EXAMPLES
[0183] Main raw materials used, trade names and suppliers thereof were listed in Table 1.
[0184] Table 1
[0185] Comparative Examples 1-4 and Inventive Examples 1-3
[0186] The compositions according to comparative examples (CE. ) 1-4 and inventive examples (Ex. ) 1-3 comprising the ingredients shown in Table 2 were prepared, with all amounts expressed by percentages by weight of ingredient with regard to the total weight of each composition unless otherwise indicated–AM: active material.
[0187] Table 2.
[0188] Preparation process
[0189] 1) The colorant compositions were prepared from a process comprising the following steps:
[0190] i) . adding the components of Phase A into a first beaker, and stirring them until homogeneous to form Premix 1-1;
[0191] ii) . adding the component of Phase B into Premix 1-1, and stirring them until homogeneous to form Premix 1-2;
[0192] iii) . adding the components of Phase C into Premix 1-2, and stirring them until homogeneous to form Premix 1-3; and
[0193] iv) . adding the component of Phase D into Premix 1-3, and stirring them until homogeneous to form Premix 1-4; and
[0194] v) . adjusting pH value of Premix 1-4 using ethanolamine to obtain the final colorant compositions.
[0195] 2) The developer compositions were prepared from a process comprising the following steps:
[0196] i) . adding sclerotium gum and water into a second beaker, and stirring them until homogeneous to form Premix 2-1;
[0197] ii) . adding tetrasodium etidronate into Premix 2-1, and stirring them until homogeneous to form Premix 2-2;
[0198] iii) . adding hydrogen peroxide into Premix 2-2, and stirring them until homogeneous to form Premix 2-3; and
[0199] iv) . adjusting pH value of Premix 2-3 using phosphoric acid to obtain the final developer compositions.
[0200] Test of stain free clear water (SFCW) performance
[0201] The test of stain free clear water (SFCW) performance was conducted according to the following process:
[0202] 1) mixing 2 g of the colorant composition and 2 g of the developer composition until homogeneous for each of Inventive Examples 1-3 and Comparative Examples 1-4, wherein pH value of each mixture was recorded in Table 3;
[0203] Table 3
[0204] 2) applying 4 g of each of the obtained mixtures on 1 g wet hair swatch;
[0205] 3) after 30 minutes, rinsing each of the hair swatch in a beaker with 400 mL water; and
[0206] 4) comparing each of the appearances of rinsing water in the beakers obtained from Inventive Examples 1-3 and Comparative Examples 1-4 with the internal atlas as shown in Figure 1 and giving scores for each of the rinsing water (scores: 0~10, the higher of the score, the better of the SFCW performance; wherein score 10 meant the rinse water as clean as clean water, score 1 meant the rinse water was dark as black ink) .
[0207] Test of SFCW performance stability
[0208] The test of SFCW performance stability was conducted according to the following process:
[0209] 1' ) aging each of the mixtures from step 1) of the test of SFCW performance at 45℃for 2 months;
[0210] 2' ) applying 4 g of each of the aged mixtures on 1 g wet hair swatch;
[0211] 3' ) after 30 minutes, rinsing each of the hair swatches in a beaker with 400 mL water; and
[0212] 4' ) comparing each of the appearances of rinsing water in the beakers obtained from the aged mixtures of Inventive Examples 1-3 and Comparative Examples 1-4 with the internal atlas as shown in Figure 1 and giving scores for each of the rinsing water, wherein the standard of giving scores was the same as that for the above test of stain free clear water (SFCW) performance.
[0213] The results of the test of stain free clear water (SFCW) performance and the test of SFCW performance stability were shown in Table 4.
[0214] Table 4
[0215] From the data in Table 4, it can be seen that, only the dye kits of Inventive Examples 1-3, comprising colorant compositions comprising 1.5 wt. %or more of the antioxidant and developer compositions comprising 0.5-10 wt. %of the oxidant, and having the pH values of 8.3 or lower from the mixtures of the colorant compositions and the developer compositions, can obtain scores of higher than 6 for each of the test of SFCW performance and the test of SFCW performance stability.
[0216] By contrast, the dye kits of Comparative Examples 1-4, which do not meet at least one of the conditions: 1) 1.5 wt. %or more of the antioxidant, 2) 0.5-10 wt. %of the oxidant, and 3) pH values of 8.3 or lower from the mixture of the colorant composition and the developer composition, obtain scores of low than 6 for each of the test of SFCW performance and the test of SFCW performance stability. Thus, it is demonstrated that the dye kit of the present invention can efficiently prevent staining, and can be stored stably even at an elevated temperature, e.g., 45℃, for a long period of time, e.g., 2 months.
Claims
1.A dye kit comprising:a) a colorant composition, comprising:a1) 1.5 wt. %or more of at least one antioxidant, relative to the total weight of the colorant composition;a2) at least one oxidative dye; andb) a developer composition, comprising:b1) from 0.5 wt. %to 10 wt. %of at least one oxidant, relative to the total weight of the developer composition;wherein the mixture of the colorant composition and the developer composition has a pH value of 8.3 or lower.2.The dye kit according to claim 1, wherein the antioxidant is chosen from ascorbic acid compounds, tocopherol compounds, salicylic acid compounds, sulfur-containing compounds, phenylpropanoids, and mixtures thereof;preferably, the antioxidant is chosen from ascorbic acid compounds, sulfur-containing compounds, and mixtures thereof;more preferably, the antioxidant is chosen from ascorbic acids, alkali metal or alkaline-earth metal or ammonium sulfites and bisulfites, and mixtures thereof;even more preferably, the antioxidant is chosen from ascorbic acid, erythorbic acid, potassium sulfite, sodium sulfite, and mixtures thereof.3.The dye kit according to claim 1 or 2, wherein the antioxidant is present in an amount ranging from 1.5 wt. %to 10 wt. %, preferably from 1.5 wt. %to 8 wt. %, and more preferably from 1.5 wt. %to 5 wt. %, relative to the total weight of the colorant composition.4.The dye kit according to any one of the preceding claims, wherein the oxidative dye comprises at least one oxidation base, and optionally at least one coupler, and preferably both at least one oxidation base and at least one coupler,wherein the oxidation base is preferably chosen from para-phenylenediamines, bis (phenyl) alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, and the addition salts thereof, and mixtures thereof, andthe coupler is preferably chosen from meta-phenylenediamines, meta-aminophenols, diaminophenols and ether derivatives thereof, meta-diphenols, naphthalene-based couplers, heterocyclic couplers, and the addition salts thereof, and mixtures thereof; and more preferably chosen from unsubstituted meta-aminophenol, meta-aminophenols substituted with one or two C1-C4 alkyl groups and / or one or two halogens, unsubstituted meta-diphenol, meta-diphenols substituted with one or two C1-C4 alkyl groups and / or one or two halogens, diaminophenol ethers, diaminobenzenes, naphthols, hydroxyindoles, amino-substituted hydroxypyridines, hydroxybenzomorpholines, and mixtures thereof;preferably, the oxidative dye comprises at least one para-phenylenediamine, at least one meta-aminophenol and at least one hydroxybenzomorpholine;more preferably, the oxidative dye comprises toluene-2, 5-diamine, 1-hydroxy-3-aminobenzene, and 6-hydroxybenzomorpholine;wherein the oxidative dye is preferably present in an amount ranging from 0.05 wt. %to 15 wt. %, preferably from 0.1 wt. %to 10 wt. %, and more preferably from 1 wt. %to 8 wt. %, relative to the total weight of the colorant composition;preferably, the oxidation base is present in an amount ranging from 0.05 wt. %to 10 wt. %, preferably from 0.1 wt. %to 8 wt. %, and more preferably from 0.5 wt. %to 5 wt. %, relative to the total weight of the colorant composition;preferably, the coupler is present in an amount ranging from 0.05 wt. %to 8 wt. %, preferably from 0.1 wt. %to 5 wt. %, and more preferably from 0.5 wt. %to 3 wt. %, relative to the total weight of the colorant composition.5.The dye kit according to any one of the preceding claims, wherein 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;preferably, the oxidant is chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persulfates, perborates, and mixtures thereof;more preferably, the oxidant is hydrogen peroxide.6.The dye kit according to any one of the preceding claims, wherein the oxidant is present in an amount ranging from 0.5 wt. %to 9 wt. %, and preferably from 0.5 wt. %to 7 wt. %, and more preferably from 0.5 wt. %to 5 wt. %, relative to the total weight of the developer composition.7.The dye kit according to any one of the preceding claims, wherein the colorant composition comprises at least one nonionic surfactant which is preferably chosen from polyoxyalkylenated hydrogenated castor oils; polyoxyalkylenated fatty acid esters of glycerol or optionally polyoxyalkylenated fatty acid esters of polyglycerol; polyoxyalkylenated fatty alcohol ethers; and mixtures thereof;more preferably, the nonionic 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 preferably, the nonionic surfactant is PEG-40 hydrogenated castor oil;wherein the nonionic surfactant is preferably present in an amount ranging from 0.01 wt. %to 20 wt. %, preferably from 0.1 wt. %to 10 wt. %, and more preferably from 0.5 wt. %to 5 wt. %, relative to the total weight of the colorant composition.8.The dye kit according to any one of the preceding claims, wherein the colorant composition comprises at least one acrylates copolymer,preferably, the acrylates copolymer is chosen from crosslinked copolymers of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having 6 or less carbon atoms, preferably a C1-C4 alkyl ester;more preferably, the acrylates copolymer is chosen from crosslinked copolymers of methacrylic acid and of a C1-C4 alkyl acrylate;wherein the acrylates copolymer is preferably present in an amount ranging from 0.01 wt. %to 15 wt. %, preferably from 0.1 wt. %to 12 wt. %, and more preferably from 1 wt. %to 10 wt. %, relative to the total weight of the colorant composition.9.The dye kit according to any one of the preceding claims, wherein the colorant composition comprises at least one first pH adjuster, which is preferably chosen from bases;preferably, the first pH adjuster is chosen from aqueous ammonia, alkali metal carbonates or bicarbonates, organic amines with a pKb at 25℃ of less than 12, preferably less than 10 and more preferably less than 6, and mixtures thereof;more preferably, the first pH adjuster is chosen from alkanolamines, preferably comprising a primary, secondary or tertiary amine function, and one or more linear or branched C1-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 adjust pH value of the colorant composition to the range from 6.5 to 9.5, preferably 6.8 to 9.0, and more preferably 7.0 to 8.8; and / orthe developer composition comprises at least one second pH adjuster, which is preferably chosen from acids.preferably, the second pH adjuster is chosen from mineral acids, carboxylic acids, sulfonic acids, phosphonic acids, and mixtures thereof;more preferably, the second pH adjuster is chosen 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 adjuster is phosphoric acid,wherein the second pH adjuster is preferably added to adjust pH value of the developer composition to the range from 1.5 to 3.0, preferably 1.8 to 2.7, and more preferably 2.0 to 2.4.10.The dye kit according to any one of the preceding claims, wherein the colorant composition and / or the developer composition comprise at least one chelating agent which is preferably selected 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;more preferably, the chelating agent is chosen from tetrasodium glutamate diacetate, tetrasodium etidronate and a mixture thereof;wherein the chelating agent is preferably present in an amount ranging from 0.01 wt. %to 8 wt. %, preferably from 0.05 wt. %to 5 wt. %, and more preferably from 0.1 wt. %to 3 wt. %, relative to the total weight of the colorant composition; and / orthe chelating agent is preferably present in an amount ranging from 0.01 wt. %to 3 wt. %, preferably from 0.02 wt. %to 2 wt. %, and more preferably from 0.05 wt. %to 1 wt. %, relative to the total weight of the developer composition.11.The dye kit according to any one of the preceding claims, wherein the developer composition further comprises at least one thickening agent which is preferably chosen from polysaccharide thickening agent.more preferably, the thickening agent is chosen from hydroxypropyl guar, carrageenan, xanthan gum, cellulose gum, cyclodextrin, sclerotium gum, polyvinyl alcohol, and mixtures thereof;even more preferably, the thickening agent is sclerotium gum,wherein the thickening agent is preferably present in an amount ranging from 0.01 wt. %to 10 wt. %, preferably from 0.05 wt. %to 8 wt. %, and more preferably from 0.1 wt. %to 5 wt. %, relative to the total weight of the developer composition.12.The dye kit according to any one of the preceding claims, wherein the colorant composition and / or the developer composition comprise at least one aqueous solvent which is preferably chosen from water; water-miscible or at least partially water-miscible compounds; and mixtures thereof;more preferably, the aqueous solvent comprises water;wherein water is present in an amount ranging from 30 wt. %to 98 wt. %, preferably from 40 wt. %to 96 wt. %, and more preferably from 50 wt. %to 92 wt. %, relative to the total weight of the colorant composition; and / orwater is present in an amount ranging from 30 wt. %to 99.5 wt. %, preferably from 50 wt. %to 99 wt. %, and more preferably from 70 wt. %to 99 wt. %, relative to the total weight of the developer composition.13.The dye kit according to any one of the preceding claims, wherein the mixture of the colorant composition and the developer composition has a pH value of 5.0-8.3, preferably 6.0-8.0, more preferably 6.2-7.8, and even more preferably 6.3-7.5, and / orthe weight ratio of the colorant 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: 1.14.A dye kit comprising:a) a colorant composition, relative to the total weight of the colorant composition, comprising:a1) from 1.5 wt. %to 5 wt. %of at least one antioxidant, which is chosen from ascorbic acid, erythorbic acid, potassium sulfite, sodium sulfite, and mixtures thereof, relative to the total weight of the colorant composition, anda2) at least one oxidative dye, comprising from 0.5 wt. %to 5 wt. %of an oxidation base of at least one para-phenylenediamine, and from 0.5 wt. %to 3 wt. %of couplers of at least one meta-aminophenol and at least one hydroxybenzomorpholine; preferably, from 0.5 wt. %to 5 wt. %of an oxidation base of toluene-2, 5-diamine, and from 0.5 wt. %to 3 wt. %of couplers of 1-hydroxy-3-aminobenzene and 6-hydroxybenzomorpholine; andb) a developer composition, comprising:b1) from 0.5 wt. %to 5 wt. %of hydrogen peroxide, relative to the total weight of the developer composition;wherein the mixture of the colorant composition and the developer composition has a pH value of 6.3-7.5.15.A process for dyeing keratin fibers, preferably hairs, comprising:a) mixing the colorant composition and developer composition according to any one of claims 1-14; andb) applying the mixture obtained from step a)on the keratin fibers.