Abstract: A process for dyeing human keratin fibers in the presence of at least one oxidizing agent, comprising applying to the fibers at least one anhydrous composition (A) comprising at least one fatty substance and at least one surfactant, at least one composition (B) comprising at least one oxidizing agent, and at least one composition (C) comprising at least one dye chosen from direct and oxidation dyes, and at least one organic amine having a pKb at 25° C. of less than 12. The present disclosure also relates to a multi-compartment device containing, in separate compartments, the compositions (A), (B), and (C); and a method of making a ready-to-use composition. The present disclosure also relates to an anhydrous composition comprising at least one fatty substance, at least one surfactant, at least one dye, and at least one organic amine.

Abstract: The present invention relates to a process for bleaching hair wherein a water free bleaching composition, preferably in form of a dust free powder or a granulate comprising at least one compound with bleaching and/or highlighting effect is mixed with an liquid oxidizing composition wherein water free bleaching powder is passed through a sieve.

Abstract: Disclosed herein is a composition for the dyeing of keratin fibers, for example, human keratin fibers such as the hair, comprising at least one 3-amino pyrazolo-[1,5-a]-pyridine derivative or one of its addition salts and a method employing this derivative. The composition of the present disclosure makes it possible to obtain coloration in various shades that is powerful, chromatic, and aesthetic, with low selectivity and with good resistance to various aggressive factors to which the hair may be subjected, such as shampoos, the light, sweat and permanent shaping.

Abstract: The present invention relates to a dyeing composition for the oxidative dyeing of human keratin fibres, at a pH less than 8, comprising one or more oxidative dye precursors, one or more fatty alcohols and fatty esters as well as one or more cationic surfactants, the weight ratio of fatty alcohol(s) to fatty acid ester(s) being greater than 2 and less than 10. It also relates to a ready-to-use composition obtained by extemporaneous mixing with an oxidizing composition prior to using the aforementioned dyeing composition. It also relates to a method of colouring keratin fibres in which the ready-to-use composition is applied on said fibres. According to another variant of the method of colouring, the aforementioned dyeing composition and the oxidizing composition are applied successively and without intermediate rinsing. The invention also relates to a device with several compartments that are suitable for its application.

Abstract: The invention relates to a dye composition comprising a thiol/disulphide fluorescent dye comprising amino groups, and to a dyeing process which has a lightening effect on keratin materials, in particular keratin fibres, especially human keratin fibres such as the hair, using said composition. It similarly relates to novel thiol/disulphide fluorescent dyes and to uses thereof in lightening keratin materials. This composition makes it possible to obtain a particularly resistant and visible lightening effect on dark keratin fibres.

Abstract: The present invention provides a method of lightening and/or coloring human keratin fibers that employs: at least one substantially anhydrous or aqueous composition (A) comprising at least one fat free of carboxylic acid groups and at least one surfactant, at least one substantially anhydrous or aqueous composition (B) comprising at least one specific aminotrialkoxysilane or aminotrialkenyloxysilane compounds, and at least one aqueous composition (C) comprising at least one oxidizing agent. In addition, the present invention provides a three-compartment device appropriate for the implementation of this method.

Abstract: The subject of the present invention is azo derivatives containing a pyrazolinone unit having the following formula (I), their mesomeric forms, their addition salts with an acid and their solvates and their use for dyeing keratin fibers. The subject of the invention is also a composition for dying keratin fibers comprising at least one azo derivative containing a pyrazolinone unit of formula (I) as direct dye, and the method for dyeing keratin fibers using this composition. The present invention makes it possible in particular to obtain chromatic colours that are resistant to the various attacks to which the hair may be subjected, in particular to shampoos and to light.

Abstract: The present invention relates to a dyeing composition comprising, in a medium appropriate for dyeing: A) one or more specific cationic cellulose ether(s), B) one or more metasilicate(s), and C) one or more benzene, heterocyclic or naphthalene oxidation dye(s). The present invention also relates to a method for dyeing keratinous fibers employing such a composition and to the use of this composition for the dyeing of keratinous fibers.

Abstract: Disclosed are composition and method for dyeing keratin-containing fibers comprising or utilizing styryl sulfide dyes of formula (1), their salts, isomers, hydrates and other solvates, wherein R1, R?1, R2, R?2, R3, R?3, W1, W?1, W2, W?2, W3, W?3, W4, W?4, Q, Q?, Y1 and Y2 are defined in claims and disclosure.

Abstract: Disclosed are oligomeric cationic azo dyes of formula (1), their salts, isomers, hydrates and other solvates, wherein n, R1, R2, X, Y? and Z+ are defined in claims and disclosure. Furthermore, the present invention relates to novel cationic oligomeric azo dyes of formula (1), compositions, thereof, especially comprising other dyes, and to application for hair dyeing.

Abstract: The invention relates to an agent for dying fibers comprising keratin, particularly human hair, the agent comprising at least one compound of the formula: together with at least one CH-acidic compound. The invention also relates to methods for shading oxidation dyed fibers, methods for freshening up fibers, methods for making an agent for dyeing fibers and to various compositions.

Abstract: Disclosed herein is a composition comprising at least one nonionic polysiloxane/polyurea block copolymer, at least one colored or coloring entity, and at least one volatile nonsilicone organic solvent. Such a composition may make it possible to obtain a coloring which is resistant to external agents.

Abstract: A new class of chemical entities chosen from aminoindolizines of formula (I), acid addition salts thereof, and solvates thereof: their use for dyeing keratin fibers, including human keratin fibers such as the hair; dyeing compositions comprising such chemical entities; and to kits containing compositions comprising those chemical entities.

Abstract: The present disclosure relates to a process for lightening human keratin fibers using at least one anhydrous composition (A) comprising at least one fatty substance, at least one surfactant, monoethanolamine and at least one basic amino acid, and at least one composition (B) comprising at least one oxidizing agent. The disclosure relates to a multi-compartment device comprising the abovementioned compositions (A) and (B).

Abstract: Process to simultaneously color and permanently restructure hair, wherein (a) an oxidative hair colorant is applied to the hair based on at least one developer substance and least one coupler substance, (b) the oxidative hair colorant is left on for 5 to 60 minutes, (c) the oxidative hair colorant is rinsed out of the hair, (d) an acidic intermediate treatment agent with a pH of from 2 to 6 is applied to the hair, (e) after an action period of from 1 to 10 minutes, the intermediate treatment agent is rinsed out, if necessary, and the hair is then rolled up onto curlers, (f) a keratin-reducing permanent restructuring agent is applied to the hair, (g) after an action period of from 1 to 30 minutes, the keratin-reducing agent is rinsed out, if necessary, (h) the hair is fixed with an oxidative material, (i) after an action period of from 3 to 15 minutes, the hair is rinsed with water, if necessary and then treated with an acidic rinse.

Abstract: The present invention relates to hair coloring and hair bleaching compositions comprising a source of carbonate ions, at least one oxidizing agent and a specified polymer thickener wherein the composition is free of a source of radical scavengers. The compositions surprisingly provide improved hair colorant and bleaching compositions which deliver improved lift, lightening and color delivery whilst minimizing damage which are easy to manufacture and have long shelf life stability.

Abstract: The present disclosure relates to a composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising at least one first oxidation base chosen from 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and the addition salts thereof, at least one second oxidation base chosen from para-phenylenediamines, at least one coupler chosen from meta-aminophenols and at least one oxidizing agent, the pH of the composition ranging from 5.5 to 7.5. The present disclosure makes it possible to obtain a coloration on keratin fibers with tints in red, coppery or mahogany tones that are sufficiently visible on natural or dyed hair and uniform from the roots to the ends.

Abstract: Provided are a one-part hair dye composition containing (A) a combination of 5,6-dihydroxyindole and 5,6-dihydroxyindole-2-carboxylic acid, (B) either one of (b1) ascorbic acid or salt thereof or (b2) sulfurous acid or salt thereof, and (C) an alkali agent and having a pH of from 8 to 11; and a method of selecting the kind of Component (B), thereby controlling a hair color upon dyeing the hair.

Abstract: The present disclosure relates to a cosmetic composition for keratin fibers, for example, human keratin fibers such as hair, comprising: at least one anionic surfactant (A) comprising, in its structure, at least one group chosen from sulphate, sulphonate, and phosphate groups; at least one carboxylic anionic surfactant (B) other than the at least one anionic surfactant (A); at least one surfactant (C) chosen from amphoteric and zwitterionic surfactants; at least one alkyl(poly)glycoside non-ionic surfactant (D); at least one cationic polymer (E); at least one zinc salt (F); and optionally at least one UV-screening agent (G); and further wherein the weight ratio of the total amount of the surfactants (A), (B), (C), and (D) to the amount of zinc element of the at least one zinc salt has a value of less than 30.

Abstract: The present disclosure relates to a cosmetic composition comprising at least one fluorescent dye and at least one aminosilicone; processes using this cosmetic composition and a kit comprising at least one composition comprising at least one fluorescent dye and at least one aminosilicone, which can be used to dye with a lightening effect human keratin materials for example, artificially dyed or pigmented hair, and dark skin.

Abstract: The subject of the present invention is the use, for dyeing in particular human keratin materials, of a direct dye, in particular an azo dye, by dry thermal transfer. Its subject is furthermore a method for dyeing keratin materials, n which at least one direct dye, in particular one azo dye, contained in a dry composition, is applied to or close to the keratin materials, and a source of heat is applied, causing the thermal transfer of the direct dye(s) at the surface and/or inside the keratin materials. It relates furthermore to the dry composition and a method for preparing it.

Abstract: The present invention relates to an aqueous composition for bleaching keratin fibers, and in particular human keratin fibers such as the hair, having a viscosity of less than 2×103 poises and comprising, in a cosmetically acceptable medium, hydrogen peroxide and at least 20% by volume of suitably selected inert particles, to a bleaching process using this composition, and also to the use of this composition for bleaching keratin fibers. The composition in accordance with the invention makes it possible rapidly to obtain substantial lightening of keratin fibers, while at the same time limiting the degradation of the keratin fibers and the skin irritation.

Abstract: By combining a hydrogen peroxide liberating complex with hair coloring dyes, a highly effective hair coloring composition is obtained which comprises a stable dry powder composition which can be stored in a single container. When use is desired, the stable dry powder composition of the present invention is mixed with water, activating the liberation of hydrogen peroxide and allowing the desired hair coloring effect to be achieved. In addition to providing a single stable dry powder formulation, the composition of the present invention is capable of achieving a wide array of shades and coloring effects.

Abstract: The dust-free coated dye-containing pellet is a granulated carrier material that is encapsulated with a dye-containing coating material. The dye-containing coating material contains a mixture of a water-soluble or water-dispersible film-former with at least one direct dye and/or at least one oxidation dye precursor. Preferred carrier materials include dextrose, oligosaccharides and cellulose compounds. The dust-free coated dye-containing pellet is preferably made by granulating the carrier material together with optional antioxidants and auxiliary agents, heating the resulting granulate at no more than 34° C., subsequently coating the granulate by spraying it with a solution or dispersion of the coating material and optionally drying as needed.

Abstract: The present invention relates to a composition for dyeing keratin fibres, comprising at least one cationic diazo direct dye chosen from the compounds of formula (I) or (II) below, the mesomeric forms thereof, and also the acid-addition salts thereof and solvates thereof. The invention allows the production of colorations that are resistant to the various attacking factors to which the hair may be subjected, especially to shampooing. The invention also makes it possible to obtain blue or violet colorations, especially sparingly chromatic blue colorations, which lead to fundamental and/or natural shades. Moreover, the direct dyes used in the context of the invention are light-stable and stable under standard lightening dyeing conditions, in particular in the presence of an oxidizing agent and/or of ammonia.

Abstract: The present invention relates to agents for coloring keratin fibers which comprise at least one cationic azodye of the general formula (I).

Abstract: The present invention relates to agents for coloring keratin fibers which comprise at least one cationic azodye of the general formula (I).

Abstract: Disclosed herein is the use, in the coloring of keratinous fibers, for example human keratinous fibers, such as the hair, of a composition comprising at least one compound chosen from the compounds of formula (I) comprising a cyclic group G including a ring H capable of opening, the dyes corresponding to the compounds of formula (I) wherein the ring H is open and the addition salts thereof: and a method for treating keratinous fibers employing this composition.

Abstract: The present disclosure relates to a composition for dyeing keratin fibers, comprising 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one as first oxidation base, 6-chloro-2-methyl-5-aminophenyl as first coupler and a substituted meta-aminophenol of given formula as second coupler, it being understood that the at least one first oxidation base and the at least one first coupler are present in a mole ratio of less than 1.5, the at least one first oxidation base and the at least one second coupler are present in a mole ratio of greater than 1, and the molar amount of the at least one first oxidation base is greater than or equal to 2.5×10?3 mol per 100 g of composition. One aspect of the present disclosure makes it possible to obtain a strong, very chromatic, aesthetic, sparingly selective and/or fast coloration of keratin fibers in coppery shades. Further, the present disclosure makes it possible to obtain a strong coloration at a neutral pH.

Abstract: The present disclosure relates to a dye composition comprising at least one dye, at least one nonionic surfactant, at least one anionic surfactant, at least one fatty alcohol and at least one non-ethoxylated fatty acid ester; the weight ratio of the total amount of fatty alcohols to the total amount of nonionic and anionic surfactants being greater than 0.5 and the water content comprising at least 55% by weight. The disclosure similarly relates to a process for dyeing keratin fibers, for example human keratin fibers, using such a composition, and also to a multi-compartment device comprising the dye composition in the first compartment, and an oxidizing composition in the second compartment.

Abstract: Disclosed herein is a composition for the non-oxidizing aqueous direct dyeing of keratin materials, for example, human keratin fibers, such as the hair, comprising, in a cosmetically acceptable medium: (a) at least one water-soluble direct dye, and (b) at least one water-insoluble non-coloring oxygenated organic compound, present in an amount of at least 30% by weight relative to the total weight of the composition. Also disclosed herein is a process for direct dyeing keratin fibers comprising applying said composition to the fibers.

Abstract: Disclosed herein is a composition for dyeing keratin fibers, comprising at least one first oxidation base chosen from 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and the addition salts thereof, at least one second coupler chosen from para-phenylenediamine, para-tolylenediamine, and the addition salts thereof, and at least one coupler chosen from substituted meta-aminophenols, wherein the first coupler/first oxidation base mole ratio is greater than 1, the first oxidation base/second oxidation base mole ratio ranges from 0.5 to 1.5, and the molar amount of the first oxidation base is greater than or equal to 2.5×10?3 mol per 100 g of composition. Also disclosed herein is a dyeing process comprising applying such a composition to the keratin fibers. The compositions of the present disclosure may make it possible to obtain a strong, aesthetic, sparingly selective, and/or fast coloration of keratin fibers in visible deep red shades.

Abstract: Disclosed herein are compositions for dyeing keratin fibers, for example human keratin fibers such as the hair, comprising 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2 -a]pyrazol-1-one or an addition salt thereof, at least one oxidation base, at least one coupler, at least one surfactant chosen from oxyalkylenated or glycerolated fatty alcohols, anionic surfactants of sulfate or sulfonate type and amphoteric surfactants of betaine type, and at least one oxidizing agent, the pH of the composition ranging from 5.5 to 7.5. The compositions disclosed herein make it possible to obtain coloration on keratin fibers with tints in red, coppery or mahogany tones that are sufficiently visible on natural or dyed hair and/or uniform from the roots to the ends.

Abstract: The subject of the present invention is the use, for dyeing in particular human keratin materials, of a specific direct azomethine dye, by dry thermal transfer. Its subject is furthermore a method for dyeing keratin materials, in which at least one direct azomethine dye contained in a dry composition, is applied to or close to the keratin materials, and a source of heat is applied, causing the thermal transfer of the direct dye(s) at the surface and/or inside the keratin materials. It relates furthermore to the dry composition and a method for preparing it.

Abstract: A hair dye composition including a first part containing an alkaline agent and a second part containing an oxidizing agent, which are mixed together immediately before use, wherein at least one of the first part and the second part contains a diazacycloheptane represented by the following general formula (1) or a salt thereof, and the pH of the mixture is 7.5 to 12; wherein Z represents a hydroxy group, a primary amino group, or a C1 to C4 acyloxy group; R1 and R2 represent H or a C1 to C4 alkyl group which may be branched; and R3 represents H, a C1 to C6 alkyl or C1 to C6 alkoxy group which may be branched, or an aralkyl or aryl group, having a total of 12 or less carbon atoms, which may have been substituted by one or more C1 to C4 alkyl or alkoxy groups.

Abstract: Disclosed herein is the use, in the coloring of keratinous fibers, such as human keratinous fibers, such as the hair, of a composition comprising at least one compound chosen from the compounds of formula (I) comprising a cyclic group G including a ring H capable of opening, the dyes corresponding to the compounds of formula (I) wherein the ring H is open, and the addition salts thereof: and a method for treating keratinous fibers employing this composition.

Abstract: Disclosed herein is a composition for the dyeing of keratin fibers, for example, human keratin fibers such as the hair, comprising at least one 3-amino pyrazolo-[1,5-a]-pyridine derivative or one of its addition salts and a method employing this derivative. The composition of the present disclosure makes it possible to obtain coloration in various shades that is powerful, chromatic, and aesthetic, with low selectivity and with good resistance to various aggressive factors to which the hair may be subjected, such as shampoos, the light, sweat and permanent shaping.

Abstract: Disclosed is a method of dyeing keratin-containing fibers comprising treating the fiber with at least one compound of formula (1), wherein R1, R2, R3, R4 independently from each other are hydrogen; hydroxy; —S—H; —S—C1-C12alkyl; halogen; C1-C12alkyl or C1-C12alkoxy, which may be substituted by one or more C1-C5alkyl, C1-C5-alkoxy, hydroxy, —(CO)—H or —(CO)—C1-C5alkyl; —NR5R6; —NO2; —(CO)H or (CO)—C1-C5alkyl; C6-C12aryl, C6-C12aryl-C1-C4alkyl or C6-C12aryl-C1-C4alkoxy, wherein the aryl moiety may be substituted by one or more C1-C5alkyl, C1-C5alkoxy, —(CO)—H or —(CO)—C1-C5alkyl; R5 and R6 independently from each other are hydrogen; hydroxy; C1-C12alkyl; hydroxy-C1-C12alkyl; —(CO)—H; —(CO)—C1-C5alkyl; phenyl or phenyl-C1-C5alkyl, wherein the phenyl moiety may be substituted by one or more C1-C5alkyl, C1-C5alkoxy, halogen, —NH2, mono-C1-C5alkylamino, di-C1-C5alkylamino, —NO2, carboxy or hydroxy; and An is an anion.

Abstract: Disclosed are oligomeric cationic azo dyes of formula (I), wherein their salts, isomers, hydrates and other solvates, wherein R1 is hydrogen; C1-C12alkyl, which may be substituted by one or more C1-C5alkyl, C1-C5-alkoxy, hydroxy or —(CO)—H; —(CO)—C1-C5alkyl; phenyl or phenyl-C1-C4alkyl, wherein the phenyl moiety may be substituted by one or more C1-C5alkyl, C1-C5alkoxy, halogen, —NH2, mono-C1-C5alkylamino, di-C1-C5alkylamino, —NO2, carboxy or hydroxy; R2 is hydrogen; or C1-C5alkyl; X is C1-C10alkylene, which may be substituted by one or more C1-C5alkyl, hydroxy, C1-C5-alkoxy, amino, mono-C1-C5alkylamino, di-C1-C5alkylamino, —SH, and/or interrupted by one or more —O— or —S—S—; C5-C10cycloalkylene; C5-C12arylene; C5-C12arylene-(C1-C10alkylene); biphenylene, which may be substituted by one or more C1-C5alkyl, hydroxy, C1-C5-alkoxy, amino, mono-C1-C5alkylamino, di-C1-C5alkylamino, —SH, and/or interrupted by one or more —O—, C1-C4-alkylene, —NR3—, —S— or —S—S—; R3 is hydrogen; C1-C12alkyl; C2-C14alkenyl; C6-C12ary

Abstract: Present invention is related to oxidative hair coloring composition comprising yogurt powder for improving combability of hair.

Abstract: The invention relates to methods of artificially coloring hair including applying to hair a composition containing at least one silicone film forming resin, at least one polysilicone polymer, and at least one hair colorant.

Abstract: The present invention relates to a process for treating keratin fibers, which comprises the application to the keratin fibers of a hair composition comprising at least one active agent chosen from hair dyes, oxidizing agents and cationic conditioners, followed by the application to the fibers of a heating iron whose temperature is greater than or equal to 60° C. The invention also relates to a composition comprising at least one superabsorbent polymer and at least-one active agent chosen from hair dyes, oxidizing agents and cationic conditioners.

Abstract: Compositions for oxidation dyeing of keratin fibers, in particular human keratin fibers such as hair, comprising, in a dyeing medium, at least one oxidation dye, at least one thickening polymer comprising at least one fatty chain and at least one fatty alcohol chosen from monoglycerolated and polyglycerolated fatty alcohols. Processes comprising such oxidation dyeing compositions.

Abstract: Disclosed are polymeric dyes of formula (1a); (1b); or (1c); wherein A and B, independently from each other represent a polymer backbone; X1 and X2 independently from each other are a linkage group selected from —C1-C10alkylene-; —C2-C12alkenylene-; —C5-C10cycloalkylene-; C5-C10arylene; —C5-C10arylene-(C1-C10alkylene)-; —C(O)—; —(CH2CH2—O)1-5—; —C(O)O—; —OCO—; —N(R1)—; —CON(R1)—; —(R1)NC(O)—; -0-; —S—; —S(O)—; —S(O)2—; —S(O)2—N(R1R2); or the direct bond; R1 and R2 independently from each other are hydrogen; or unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C1-C14alkyl; C2-C14alkenyl; C6-C10aryl; C6-C10aryl-C1-C10alkyl; or C5-C10alkyl(C5-C10aryl); Y1 and Y2 independently from each other are a residue of an organic dye; or hydrogen; wherein at least one of Y1 and Y2 is a residue of an organic dye; An1, An2 and An3, independently from each other are an anion; a and b independently from each other are a number from 1 to 3; m is a number from O to 1

Abstract: The invention relates to methods of preserving artificial color on keratin materials including applying to artificially colored keratin materials a composition containing at least one silicone film forming resin and at least one polysilicone polymer.

Abstract: The present invention relates to the use, for the dyeing with lightening effect of human keratin substances, and in particular of human keratin fibres such as the hair, of a composition comprising at least one fluorescent cyanine dye. The present invention allows human keratin substances to be both dyed and at the same time lightened without detriment to said substances. The fluorescent dyes employed in the context of the invention also have high tinctorial affinity for keratin substances and good properties of resistance towards external agents, and especially towards shampoos.

Abstract: A new class of chemical entities chosen from aminoindolizines of formula (I), acid addition salts thereof, and solvates thereof: their use for dyeing keratin fibers, including human keratin fibers such as the hair; dyeing compositions comprising such chemical entities; and to kits containing compositions comprising those chemical entities.

Abstract: Disclosed are oxazine disulfide dyes of formula (1) D1-(Z1)r-Y1—S-A, wherein A is hydrogen; or a radical of formula (1a)*—S—Y2-(Z2)r-D2; Y1 and Y2 independently from each other are unsubstituted or substituted, straight-chain or branched, interrupted or uninterrupted C—1—C—10alkylene; C5-C10cycloalkylene; C5-C10arylene; or —C5-C10arylene-(C1-C10alkylene); Z1 and Z2 independently from each other are *—(CH2)p—C(O)—**; *—(CH2CH2—O)S—**; *—(CH2)p—C(O)O—**; *—(CH2)p—OCO—**; *—(CH2)P—N(R1)—**; formula 1(g); —(CH2)p—CON(R1)—**; *—(CH2)p—(R1)NC(O)—**; , 0-; —S—; —S(O)—; —S(O)2—; or a cationic biradical of a substituted or unsubstituted aromatic or heteroaromatic compound of the formula (1a); (1b); (1c); (1d); or (1e); wherein the asterix * indicates the linkage to D1 and/or D2; the asterix ** indicates the linkage to Y1 and/or Y2; W1 is N or a radical of CR5; R1, R2, R3, R4 and R5 independently from each other are hydrogen; C1-C14alkyl; C2-C14alkenyl; C5-C10aryl; C5-C10aryl-(C1-C10alkyl); or —C1-C10alkyl(C5-C10aryl);

Abstract: The present invention refers to dyestuffs of the general Formula (I) wherein R, X, Y and Z are defined as given in claim 1, dyestuff mixtures and hair dye compositions comprising them, as well as a process for colouring hair.

Abstract: Disclose herein is a composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising at least one oxidation base chosen from diamino-N,N-dihydropyrazolones and addition salts thereof, at least one coupler, and at least one heterocyclic direct dye. Also disclosed herein is a method for dyeing keratin fibers comprising applying a composition of the present disclosure to the keratin fibers. The compositions and methods of the present disclosure may make it possible to obtain fast coloration of keratin fibers that is resistant to light and/or to washing.