Abstract: The invention concerns a ready-to-use composition for bleaching human keratinous fibres previously dyed with direct dyes, in particular hair, comprising at least a 4-electron oxidoreductase enzyme, and at least an enzymatic mediator. The invention also concerns a bleaching method using said composition.

Abstract: The subject of the invention is ready-to-use compositions for the oxidation dyeing of keratin fibers, and in particular human keratin fibers such as the hair, comprising, in a medium which is suitable for dyeing, at least one oxidation base chosen from para-phenylenediamines, double bases, para-aminophenols and heterocyclic bases, at least one enzyme of 2-electron oxidoreductase type in the presence of at least one donor for the enzyme, and at least one enzymatic mediator, and the oxidation dyeing processes using these compositions.

Abstract: The invention concerns a ready-to-use composition for bleaching naturally pigmented human keratinous fibres, in particular hair, comprising at least a 4-electon oxidoreductase enzyme, and at least an enzymatic mediator. The invention also concerns a bleaching method using said composition.

Abstract: The invention relates to a dye composition for keratin fibres, in particular for human keratin fibres such as the hair, having, in a medium suitable for dyeing, at least one cationic direct dye of given formula, and containing at least one specific cationic or amphoteric substantive polymer.

Abstract: The invention relates to a cosmetic mixture for the oxidation tinting of keratin fibers, especially human hair, comprising in a support material suitable for tinting keratin fibers (a) at least one laccase-type enzyme; (b) at least one particular conditioning agent for keratin fibers which is insoluble in aqueous media; and (c) at least one oxidation colorant. The invention also relates to the tinting methods using the above mixture.

Abstract: The invention relates to a composition for dyeing keratinous fibres, in particular human keratinous fibres such as hair, comprising, in an appropriate dyeing medium, at least one cationic direct dye of a given formula, and which is characterized in that it contains, in addition, at least one anionic surfactant chosen from the group consisting of acyl isethionates, acyl taurates, sulphosuccinates, acyl sarcosinates, acyl glutamates, polyoxyalkylenated ether carboxylic acids and their salts, fatty glucamide sulphates, alkyl galactoside uronates, anionic derivatives of alkyl polyglucosides and mixtures thereof.

Abstract: The invention concerns a ready-to-use oxidation dyeing composition for keratinous fibres, and in particular human keratinous fibres such as hair comprising, in a suitable dyeing medium, at least an oxidation base selected among certain substituted paraphenylenediamine derivatives and their addition salts with an acid, at least an alkaline agent and hydrogen peroxide, and the dyeing method using said composition.

Abstract: The invention relates to a composition for dyeing keratin fibers, in particular human keratin fibers such as the hair, comprising at least one cationic direct dye of given formula and at least one thickening polymer chosen from nonionic guar gums, biopolysaccharide gums of microbial origin, gums derived from plant exudates, pectins, alginates, starches, and carboxyalkylcelluloses. The invention also relates to the dyeing processes and dyeing devices using the composition.

Abstract: The invention concerns a ready-to-use composition for bleaching human keratinous fibres previously dyed with oxidation dyes, comprising at least a 4-electron the oxidoreductase enzyme, and at least an enzymatic mediator. The invention also concerns a bleaching method using said composition.

Abstract: The invention concerns an oxidation dyeing composition for keratinous fibres, and in particular human keratinous fibres such as hair comprising, in a medium suitable for dyeing, at least an oxidation base selected among certain substituted para-phenylenediamine derivatives and their addition salts with an acid, and at least a synthetic direct dyeing agent selected among the azo, quinoid, triarylmethane, indoamino, azine dyes and/or a natural dye. The invention also concerns a dyeing method using said composition.

Abstract: The invention concerns a ready-to-use composition for oxidation dyeing of keratinous fibers, and in particular human keratinous fibers such as hair comprising, in a suitable dyeing medium, at least an oxidation base, 2-amino 3 hydroxy pyridine as coupling agent, and at least an enzyme such as laccase, as well as the method using said composition.

Abstract: The invention relates to a dye composition for keratin fibers, in particular for human keratin fibers such as the hair, having, in a medium suitable for dyeing, at least one cationic direct dye of given formula, and containing at least one specific cationic or amphoteric substantive polymer. The invention also relates to the dyeing processes and devices using the composition.

Abstract: The invention relates to a cosmetic mixture for the oxidation tinting of keratin fibres, containing in a support material suitable for tinting keratin fibres (a) at least one laccase-type enzyme; (b) at least one polymer thickener selected from the group constituted by: (i) amphiphilic non-ionic polymers comprising at least one fatty chain and at least one hydrophilic unit; (ii) anionic amphiphilic polymers comprising at least one hydrophilic unit and at least one fatty chain unit; (iii) cross-linked acrylic acid homopolymers; (iv) cross-linked 2-acrylamide-2-methyl-propane sulfonic acid homopolymers and their cross-linked acrylamide copolymers, which are partially or fully neutralized; (v) ammonium acrylate homopolymers or ammonium acrylate and acrylamide copolymers; (vi) dimethylaminoethyl-methacrylate homopolymers quatemized by methyl chloride or dimethylaminoethyl-methacrylate copolymers quaternized by methyl chloride and acrylamide copolymers; (vii) non-ionic guar gums; (viii) scleroglucan gum (a biopoly

Abstract: The invention relates to a ready-to-use mixture for tinting keratin fibres, especially human keratin fibres such as hair, comprising in a support material suitable for tinting keratin fibres (a) at least one laccase-type enzyme; (b) at least one solvent selected from among certain polyols and their ethers or polyethers; and (c) at least one oxidation colorant. The invention also relates to the hair tinting method using said mixture.

Abstract: The invention concerns a ready-to-use oxidation composition for dyeing keratinous fibres, in particular human keratinous fibres such as hair comprising, in a medium suitable for dyeing, at least one oxidation colouring agent, at least an acid direct colouring agent comprising in its structure at least a sulphonic function or at least a carboxylic function, and at least an enzyme such as laccase, as well as the dyeing method using said composition.

Abstract: The invention relates to a composition for dyeing keratinous fibres, in particular human keratinous fibers such as hair, comprising, in an appropriate dyeing medium, at least one cationic direct dye of a given formula, and which is characterized in that it contains, in addition, at least one anionic surfactant chosen from the group consisting of acyl isethionates, acyl taurates, sulphosuccinates, acyl sarcosinates, acyl glutamates, polyoxyalkylenated ether carboxylic acids and their salts, fatty glucamide sulphates, alkyl galactoside uronates, anionic derivatives of alkyl polyglucosides and mixtures thereof. The invention also relates to the dyeing methods and devices using it.

Abstract: The invention concerns an oxidation dyeing composition for keratinous fibers, and in particular human keratinous fibers such as hair comprising, in a suitable dyeing medium, at least a first oxidation base selected among certain substituted para-phenylenediamine derivatives and their addition salts with an acid, and at least a second selected oxidation base, and the dyeing method using said composition.

Abstract: The invention concerns an oxidation dyeing composition for keratinous fibers, and in particular for human keratinous fibers such as hair comprising, in a suitable dyeing medium, at least an oxidation base selected among certain substituted paraphenylenediamine derivatives and their addition salts with an acid, and at least a selected coupling agent, and the dyeing method using said composition.

Abstract: The invention relates to a composition for dyeing keratin fibers, in particular human keratin fibers such as the hair, comprising at least one cationic direct dye of given formula and at least one thickening polymer chosen from nonionic guar gums, biopolysaccharide gums of microbial origin, gums derived from plant exudates, pectins, alginates, starches, and carboxyalkylcelluloses. The invention also relates to the dyeing processes and dyeing devices using the composition.

Abstract: The invention relates to a ready-to-use composition for dyeing keratin fibers, and in particular human keratin fibers such as the hair, comprising, in a medium which is suitable for dyeing, at least one cationic direct dye and at least one auto-oxidizable dye, as well as to the dyeing process using this composition.