Abstract: The present invention relates to agents for coloring keratin fibers which comprise at least one zwitterionic azomethine dye of the general formula (I), (II), or (III) in which z is a heterocycle of the formula in which R8 is an alkyl sulfonate radical of the formula (XIII);

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: Compositions for dyeing keratin fibers comprise (a) at least one keratin dyeing compound selected from aromatic systems which comprise at least one boronic acid or boronic ester moiety and which are capable of forming upon oxidation a nucleophile or an electrophile, (b) at least one additional keratin dyeing compound selected from the group consisting of auxiliary developers and auxiliary couplers, and (c) a cosmetically suitable medium. Methods for oxidatively dyeing keratin fibers comprise the steps of applying such compositions in the presence of an oxidizing agent and rinsing the hair. A hair coloring product in kit form comprises a first separately packaged container comprising a composition as described above and a second separately packaged container comprising an oxidizing agent.

Abstract: Colorants for keratin fibers comprising cationic quinoxaline thiazole azo dyes of the general formula (I).

Abstract: The present disclosure relates to compositions for the dyeing of human keratin fibers containing at least one compound of the following formula (I): Also disclosed herein is a method for dyeing human keratin fibers comprising applying to the fibers a dyeing composition of the present disclosure until the desired effect is obtained, in the presence or absence of an oxidizing agent, as well as a dyeing compositions containing at least one compound of formula (I).

Abstract: Disclosed herein is a dyeing composition comprising a particular disulphide dye and a method of dyeing human keratin fibers, such as hair, using this composition. This composition makes it possible to obtain particularly fast chromatic colorations.

Abstract: Cationic heteroarylazine dyes of general formulas (I) and (II) and colorants for keratin fibers containing these compounds.

Abstract: A hair dye composition containing an azo dye (1) or a salt thereof: wherein R represents a coupler moiety, R1 and R3 each independently represent —SO3M, —SO2NR4R5 or a hydrogen atom, R2, R4 and R5 each independently represent a hydrogen atom or a substituent, and M represents a hydrogen atom, metal atom or ammonium, with a proviso that R1 and R3 are not hydrogen atoms at the same time.

Abstract: Formula (I) wherein R1 and R2 each independently from each other are a residue of an organic dye: Y1 and Y2 each independently from each other are unsubstituted or substituted, straightchain or branched, interrupted or uninterrupted —C1-C10alkylene-; —C5-C10cycloalkylene-; C5-C10arylene; or —C5-C10arylene-(C1-C10alkylene)-; Z1 and Z2 independently from each other are Formula (II) are each independently from each other hydrogen; or unsubstituted or substituted, straight-chain or branched, mono-cyclic or polycyclic, interrupted or uninterrupted C1-C14alkyl; C2-C14alkenyl; C6-C10aryl; C6-C10aryl-C1-C10alkyl; or C5-C10alkyl(C5-C10aryl); r, q and n independently from each other are 0 or 1, if n is 0, Z3 is hydrogen; and if n is 1, Z3 is —S—: with the proviso that the method does not comprise treating the fiber with an enzyme of the type of a protein disulfidisomerase (EC 5.3.4.1).

Abstract: Fiber-coloring components for dye compositions and methods for using the same, wherein the compositions comprise: (i) at least one component A comprising a compound selected from imidazo[1,5-a]pyrimidinium derivatives of general formula I, enamine counterparts of such derivatives, and mixtures thereof: and (ii) at least one component B comprising a reactive carbonyl compound.

Abstract: Colorant for keratin fibers containing cationic indazoline thiazolazo dyes of the general formula (I).

Abstract: 4-(Pyrazol-4-ylimino)-2,5-cyclohexadienylidene-ammonium salts of the general formula(I) and colorants comprising these compounds for keratin fibres.

Abstract: The agent for coloring keratin fibers, especially human hair, contains at least one common cosmetic additive; an oxidant, such as hydrogen peroxide; and at least one naphthalene derivative of formula (I): wherein A1 and A2 are different from each other and, independently of each other, each denote a partial structure of formula (II), (IIIa), (IIIb), (IV), (V), or (VI): E is O or S; Y is N or a quaternary nitrogen atom substituted with a C1-C6-alkyl group, a C2-C4-hydroxyalkyl group, or a C4-C6-polyhydroxyalkyl group. New naphthalene derivatives are also described.

Abstract: The present invention has for an object agents for the simultaneous brightening and dyeing of keratin fibers—particularly hair—characterized in that they contain a) at least one oxidant and (b) at least one indolylthiazoliumazo dye of formula (I) and that, (c) they have a basic pH

Abstract: The invention relates to a composition comprising, in a cosmetically acceptable medium, at least one particular direct dye. The invention further relates to a method for treating keratin fibers, in particular human keratin fibers, using the abovementioned composition, and a device comprising it. Finally, its subject is the use of the composition according to the invention as agent for lightening and/or as agent for dyeing said fibers.

Abstract: The present disclosure relates to a novel family of dicationic bis-hydrazone compounds that may be used as direct dyes, and to a dye composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising, in a suitable dyeing medium, at least one such compound. Also disclosed are dyeing processes implementing this composition and uses thereof.

Abstract: The present disclosure relates to a novel dyeing composition for dyeing human keratinous fibers, such as hair, comprising at least one dicationic diazo dye of formula (I): [W1—N?N—W2—W3—(W4—W5)p-]2-L ??Formula (I) as well as the process for dyeing hair using same. Certain compounds of formula (I) are also disclosed herein.

Abstract: Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and at least one 5-membered aza heteroaromatic keratin dyeing compound with an N-hydroxy or N-amino group and derivatives thereof. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.

Abstract: The invention concerns the use as direct dyeing agent of at least one tetra-azapentamethine compound, a dyeing composition comprising at least such a compound, as well as a method for dyeing keratinous fibers, in particular human keratinous fibers and more particularly hair, which consists in applying at least one composition comprising such a compound. The composition also concerns tetra-azapentamethine compounds of formula (I). The invention further concerns a method for bleaching such compounds, as well as bleaching keratinous fibers previously dyed therewith.

Abstract: Disclosed herein is a method for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising applying to the keratin fibers a dye composition comprising at least one compound chosen from styryl and imine compounds comprising a heterocycle that can undergo opening and/or dyes corresponding to these compounds whose heterocycles are open. The compositions and methods of the present disclosure may produce a coloration of keratin fibers that is chromatic and fast with respect to external factors such as shampooing, does not stain, and/or allows simultaneous dyeing and bleaching of keratin fibers.

Abstract: The present invention relates to agents for coloring keratin fibers which comprise at least one zwitterionic azo dye of the general formula (I) where R1 is an alkylsulfonate radical of the formula (II),

Abstract: Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and at least one bicyclic 5-6 systems of aza heteroaromatic keratin dyeing compounds wherein the 5-membered rings have one to three nitrogen atoms and an N-hydroxy or N-amino group and derivatives thereof. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.

Abstract: The present disclosure relates to symmetrical cationic diazo compounds of formula (I) below, their resonance forms, and also their acid addition salts and their solvates: wherein W1 radicals, which are identical, are chosen from a halogen atom, or an —NR4-Ph-NR5R6, —NR4-Ph-OR7, —O-Ph-OR7 or —O-Ph-NR5R6 group or else an —NR5R6 or —OR7 group with certain provisos; L, a non-cationic linker connecting the two identical azo chromophores, is chosen from a covalent bond; an optionally substituted C1-C40 alkyl radical optionally interrupted by a (hetero)cycle, the alkyl radical being optionally interrupted by at least one heteroatom or group comprising at least one heteroatom or an optionally substituted phenyl radical. The disclosure further relates to dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers, and also to a method of coloring keratin fibers that employs this composition, and a device comprising a plurality of compartments.

Abstract: Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and at least one bicyclic fused 5-5-membered aza heteroaromatic keratin dyeing compounds having a ring junction nitrogen and an N-hydroxy or N-amino group and derivatives thereof. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.

Abstract: A subject-matter of the present patent application is the use, as direct dye in dyeing compositions for keratinous fibres, in particular human keratinous fibres, such as the hair, or for the manufacture of such compositions, of a specific polycationic compound.

Abstract: The invention concerns the use as direct dyeing agent of at least one tetra-azapentamethine compound, a dyeing composition comprising at least such a compound, as well as a method for dyeing keratinous fibers, in particular human keratinous fibers and more particularly hair, which consists in applying at least one composition comprising such a compound. The composition also concerns tetra-azapentamethine compounds of formula (I). The invention further concerns a method for bleaching such compounds, as well as bleaching keratinous fibers previously dyed therewith.

Abstract: Bicyclic fused 5-5 heteroaromatic keratin dyeing compounds with two or three heteroatoms. This invention further relates to a composition for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and one or more bicyclic fused 5-5 heteroaromatic keratin dyeing compounds with two or three heteroatoms. This invention further relates to a method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.

Abstract: Hair dyeing compositions are provided which comprise at least one coupler selected from N-aryl-m-phenylenediamine derivatives, 2-substituted N-aryl-m-phenylenediamine derivatives, and N-aryl-m-diaminopyridine derivatives, in combination with and at least one diaminopyrazole primary intermediate.

Abstract: A dye composition comprising at least one mixed dye comprising at least two chromophore chosen from azine and (hetero)aromatic nitro compounds, optionally associated with at least one chromophore chosen from methine and carbonyl compounds; a process for dyeing keratin fibers, for example, human keratin fibers, such as the hair, using the composition, a multi-compartment device comprising the composition; and the abovementioned mixed dyes.

Abstract: The invention relates to agents for coloring fibers containing keratin, in particular, human hair, which comprise selected cationic, CH-acidic heterocycles according to formula I in which A, R1, R2 and X? are as defined in the application, in combination with reactive carbonyl compounds, to the use of this combination in agents for coloring fibers containing keratin, for freshening up the color or nuancing fibers containing keratin which have already been colored, and to a method of coloring fibers containing keratin, in particular, human hair.

Abstract: The invention relates to a composition for dyeing fibers such as the hair, comprising at least one cationic direct dye of given formula, and which also contains at least one thickening polymer chosen from the group comprising: —nonionic amphiphilic polymers comprising at least one hydrophilic unit and at least one unit containing a fatty chain, —anionic amphiphilic polymers comprising at least one hydrophilic unit and at least one unit containing a fatty chain, —cationic amphiphilic polymers comprising at least one hydrophilic unit and at least one unit containing a fatty chain. The invention also relates to the dyeing processes and dyeing kits therefor.

Abstract: Disclosed herein are a dye composition comprising at least one mixed dye comprising at least one chromophore chosen from chromophores of the azo family and the tri(hetero)arylmethane family; and the mixed dyes. Further disclosed herein are a process for dyeing keratin fibers, such as human keratin fibers, using the composition, and a device comprising the composition.

Abstract: The invention relates to novel diaminopyrazole having formula (I), wherein: R1, R2, identical or different, represent a C3 C5 mono- or polyhydroxyalkyl, isopropyl, n-propyl or ethyl group, said groups being linear or branched, and their physiologically acceptable salts. The invention also relates to a composition for dyeing keratinous fibres containing a compound having formula (I) and the method for using same.

Abstract: Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and at least one bicyclic fused 5-5-membered aza heteroaromatic keratin dyeing compounds having a ring junction nitrogen and an N-hydroxy or N-amino group and derivatives thereof. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.

Abstract: The present disclosure relates to processes for synthesizing tetraazapentamethine compounds that comprise reacting at least one compound of azine type with at least one oxidizing agent. The disclosure also relates to processes for dyeing keratin fibers, for example human keratin fibers, that comprise using such synthetic processes.

Abstract: The present invention relates to a dye composition including at least one mixed dye containing at least one chromophore of methine or carbonyl type or their combinations. The invention furthermore relates to a process for dyeing keratin fibers, especially human keratin fibers, such as the hair, using the composition, and also to a suitable kit. The invention also relates to the abovementioned mixed dyes per se.

Abstract: The invention relates to novel diaminopyrazole compounds having formula (I): wherein R1 represents a linear or branched C4-C5 alkyl or n-propyl group, or a linear or branched C3-C5 mono or polyhydroxy alkyl group, and the addition salts thereof with a physiologically acceptable acid. The invention also relates to the compositions containing such a compound for the dyeing of keratinous fibres and the method for using said compositions.

Abstract: The present disclosure relates to compounds used as direct dyes, and dyeing compositions comprising such compounds. The disclosed compounds have the formula A-L-B, wherein A and B are chosen from arylazoimidazolium coloring functional groups, and L is a linker comprising at least one cationic group C. The disclosure also relates methods of using such compositions for coloring keratin fibers, such as the hair.

Abstract: Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and at least one bicyclic fused 5-5-membered aza heteroaromatic keratin dyeing compound with an N-hydroxy or N-amino group and derivatives thereof. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.

Abstract: The present disclosure relates to the process of dyeing human keratinous fibers, such as the hair, with at least one specific direct dye in cosmetic compositions. Also disclosed herein are the direct dyeing and lightening compositions comprising said compounds, and the corresponding dyeing kits.

Abstract: The invention concerns novel diaminopyrazole derivatives of formula (I), wherein: R1 represents C1-C6 alkyl or C2-C6, preferably up to C4, alkenyl, linear or branched, bearing at least a substituent selected among OR, NHR, NRR?, SR, SO2R, COOH, CONH2, CONRR?, PO(OH)2, SH, SO3X, a non-cationic heterocycle, Cl, Br or I?; X represents H, Na, K or NH4; R and R?, identical or different, represent C1-C6 alkyl or C2-C6, preferably up to C4, alkenyl, linear or branched, unsubstituted or substituted by one or several functional groups selected among OH, NH2, OR, NHR, NRR?, SR, SOR, SO2R, COOH, CONH2, CONRR?, PO(OH)2, SH, SO3X, a non-cationic heterocycle, Cl, Br or I, X, R and R? having the definitions mentioned above; R2 represents H, or C1-C6 alkyl or C2-C6, preferably up to C4, alkenyl, linear or branched, unsubstituted or substituted by one or several functional groups selected among OH, NH2, OR, NHR, NRR?, SR, SOR, SO2R, COOH, CONH2, CONRR?, PO(OH)2, SH, SO3X, a non-cationic heterocycle, Cl, Br or I, X, R and R? h

Abstract: Disclosed herein is a dye composition for dyeing human keratin fibers, such as the hair, comprising a direct polycationic dye of formula (I) below: Col-Z-Col??(I) in which Col, which may be identical or different, is a noncationic dye chosen from azo dyes, methine dyes, azomethine dyes, phenothiazine dyes, triarylmethene dyes, xanthene dyes, phenanthridine dyes, and phthalocyanin dyes; and Z is chosen from linear and branched, saturated and unsaturated C1-C20 hydrocarbon-based groups comprising at least one nitrogen atom and bearing at least two cationic charges, and also to processes for dyeing human keratin fiber using said composition, to the use of the dyes of formula (I) as direct dyes, and to multi-compartment devices.

Abstract: The disclosure relates to novel imidazole compounds which can be useful as couplers for the oxidation dyeing of keratinous fibers. The present disclosure also relates to a dyeing composition for dyeing keratinous fibers comprising at least one oxidation base and at least one coupler of the imidazole type as disclosed herein, and the dyeing method using this composition.

Abstract: Bicyclic 5-5 heteroaromatic compounds having a ring junction nitrogen and incorporating thia or oxa heteroatoms heteroatoms. Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and one or more bicyclic 5-5 heteroaromatic compounds having a ring junction nitrogen and incorporating thia or oxa heteroatoms heteroatoms. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.

Abstract: The present invention relates to cationic direct dyes of formula (I) below: in which W1 represents —NR8— or —O—; X1 represents N; CR9; R1 and R2, which may be identical or different, represent a hydrocarbon chain; R3 and R4, which may be identical or different, represent a hydrogen atom, a halogen atom, a nitro group, a cyano group or a hydrocarbon chain; R5, R6, R7, R8 and R9, which may be identical or different, represent a hydrogen atom or a hydrocarbon chain; L represents a specific bridging group and X represents a cosmetically acceptable organic or mineral anion. It likewise relates to a dye composition comprising, in a medium suitable for dyeing human keratin fibers, such a dye, a process using it, and also a multicompartment device.

Abstract: Composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, which comprises at least one compound chosen from among the direct dyes of the heteroylarylmethane type defined herein, including diheteroylarylmethane and leuco precursors thereof. Furthermore, a method for dyeing keratin fibers, for example, human keratin fibers such as the hair, using the composition and a kit or device containing same.

Abstract: A composition for dyeing keratin fibers, such as human keratin fibers, and further such as the hair, comprising at least one dye chosen from heteroylmethane type direct dyes, such as triheteroylmethane direct dyes and leuco precursors of such dyes, as defined herein. A method that uses the composition for dyeing keratin fibers, such as human keratin fibers, and further such as the hair, and a kit or device containing same.

Abstract: A composition for dyeing keratin fibers, for example, human keratin fibers, such as hair, comprising at least one dye chosen from heteroyldiarylmethane type direct dyes, for example, monoheteroyidiarylmethane direct dyes, and the leuco precursors thereof; and also to methods for dyeing keratin fibers, for example, human keratin fibers, such as hair, using the composition, and multi-compartment devices.

Abstract: The present invention relates to hair colouring and bleaching compositions comprising i) at least one source of peroxymonocarbonate ions, ii) at least one alkalizing agent, preferably a source of ammonium ions, and iii) at least one radical scavenger, wherein said composition has a pH of up to 9.5, which provide a high level of lift and lightening and the required dye deposition and grey coverage whilst reducing the concentration of peroxide, the ammonia odour and reducing the hair fibre damage.