Abstract: The disclosure relates to a composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing, at least one oxidation dye precursor, at least one alcohol oxidase enzyme, at least one substrate for said enzyme and at least one surfactant. The present disclosure further relates to a process for dyeing keratin fibers using the compositions disclosed herein and also to a dyeing “kit”.

Abstract: The disclosure provides compositions for dyeing keratin fibers, such as human keratin fibers including the hair, comprising, in a medium that is suitable for dyeing, at least one oxidation dye precursor, at least one alcohol oxidase enzyme, at least one enzyme substrate, and at least one polyurethane associative polymer. The disclosure also provides processes for dyeing keratin fibers, which comprises applying the compositions, and also to dyeing “kits.

Abstract: The present disclosure relates to compositions for dyeing keratin fibers, for example human keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing, at least one oxidation dye precursor, at least one alcohol oxidase enzyme, at least one substrate for the enzyme, and at least one non-quinone direct dye comprising an acid functional group. This disclosure also relates to processes for dyeing keratin fibers, which comprise applying the compositions disclosed herein, and to dyeing kits comprising the compositions as disclosed herein.

Abstract: Disclosed herein is a composition for dyeing keratin fibers, for example human keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing keratin fibers, at least one oxidation dye precursor, at least one alcohol oxidase enzyme, at least one substrate for the at least one alcohol oxidase enzyme and at least one quinone direct dye. Also disclosed is a process for dyeing keratin fibers, which comprises applying this composition to keratin fibers. Also disclosed is a multi-compartment device comprising the composition.

Abstract: The invention relates to a composition comprising at least one fluorescent dye and at least one particular sequestering agent, and also to processes and a device for using these compositions. The invention similarly relates to the use of a composition comprising at least one particular fluorescent dye and at least one particular sequestering agent, to dye with a lightening effect human keratin materials and more particularly artificially dyed or pigmented hair, and coloured skin.

Abstract: A composition comprising at least one fluorescent dye and at least one insoluble conditioning agent; and processes and multicompartment kits comprising the composition. This disclosure also relates to the use of this composition for dyeing a human keratin material, and, for example, artificially dyed or pigmented hair and/or dark skin, with a lightening effect.

Abstract: The invention relates to the use for of compositions dyeing keratin materials containing, in a medium that is suitable for dyeing, at least one compound of formula (I) in which X and Y, independently of one another, are chosen from a CH group and a nitrogen atom, R is chosen from aromatic mono- or poly-cyclic groups with fused or non-fused rings, wherein the groups have at least 5 members and optionally comprise at least one hetero atom chosen from nitrogen, oxygen, sulphur and phosphorus. Processes and kits using these compositions are also disclosed.

Abstract: A composition and method for dyeing keratin materials, comprising, in a medium that is suitable for dyeing, at least one compound of formula (I) wherein X is chosen from sulphur atoms and selenium atoms, R is chosen from hydrogen, C1-C9 alkyl groups, cyano groups, halo groups, C1-C6 alkoxy groups, amino groups, (C1-C6 alkyl)amino groups, hydroxy(C1-C6 alkyl)amino groups, tri(C1-C6 alkyl)ammonio groups, imidazolyl groups, pyridinyl groups, thio groups, (C1-C6 alkyl)thio groups, thio(C1-C6 alkyl) groups, (C1-C6 alkyl)carbonyl groups, hydrogenocarbonyl groups, hydroxycarbonyl groups, (C1-C6 alkoxy)carbonyl groups, nitro groups, sulphonato groups, and corresponding protonated groups, and aromatic groups. Dyeing kits are also disclosed.

Abstract: The present disclosure relates to a process for dyeing keratin materials with compositions comprising, in a medium that is suitable for dyeing, at least one ninhydrin derivative, which may optionally be combined with at least one compound comprising at least one labile hydrogen. Further disclosed herein are dying compositions, multi-component hair dye compositions, and a multi-compartment kits.

Abstract: The present disclosure relates to the process, for dyeing keratin materials, comprising applying to the fibers a composition comprising, in a medium appropriate for dyeing, at least one ninhydrin derivative, which may optionally be combined with at least one compound comprising a labile hydrogen. Further disclosed herein is a multi-component hair dye composition, and a multi-compartment kit comprising same.

Abstract: Disclosed are processes and compositions for dyeing keratin materials comprising, in a medium that is suitable for dyeing, at least one ninhydrin compound of formula (I) wherein, A comprises an at least 12-membered polycycle, such as those chosen from anthracenyl, tetracenyl, phenanthrenyl, and azulenyl groups. Hair dyeing processes and kits using these compositions are also disclosed.

Abstract: A composition comprising, in a medium that is suitable for dyeing, at least one ninhydrin derivative chosen from compounds of formula (I) and tautomers thereof: wherein: A represents a fused or non-fused, at least 6-membered aromatic mono- or polycyclic group, possibly comprising at least one hetero atom chosen from nitrogen, oxygen, sulphur, and phosphorus atoms, a dyeing process using the composition, and a multi-component coloring agent comprising the composition.

Abstract: The present disclosure relates to the process, for dyeing keratin materials, comprising applying to the keratin materials a composition comprising, in a medium appropriate for dyeing, at least one polycyclic aromatic vicinal trione, which may be optionally combined with at least one compound comprising a liable hydrogen. Further disclosed herein is a cosmetic dyeing composition, a multicomponent hair dye composition, and a multicompartment kit comprising the same.

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 disclosure relates to a composition comprising at least one fluorescent dye and at least one non-associative thickening polymer, to processes using such a composition, and to devices comprising such a composition. The disclosure also relates to processes and methods for dyeing human keratin materials, for example artificially dyed or pigmented hair and dark skin, with a lightening effect, using compositions comprising at least one fluorescent dye and at least one non-associative thickening polymer.

Abstract: Disclosed herein are compositions comprising at least one fluorescent dye and at least one polyol, processes using this composition and a device therefor. Further disclosed herein is the use of a composition for dyeing a human keratin material, such as artificially dyed or pigmented hair and dark skin, with a lightening effect, comprising at least one fluorescent dye and at least one polyol.

Abstract: A process for dyeing keratin fibers that have previously undergone a permanent reshaping process, comprising applying at least one composition comprising, in a cosmetically acceptable medium, at least one fluorescent dye that is soluble in the medium. The use of the at least one composition may makes it possible to dye a human keratin material, and further, for example, artificially dyed or pigmented hair, with a lightening effect.

Abstract: Disclosed herein is a composition comprising at least one fluorescent dye and at least one insoluble polyorganosiloxane conditioning polymer, processes using this composition, and a device. Further disclosed herein is the use of compositions comprising at least one fluorescent dye and at least one insoluble polyorganosiloxane conditioning polymer, for dyeing human keratin materials, for example artificially dyed and/or pigmented hair and dark skin, with a tightening effect.

Abstract: The present disclosure relates to a method of dyeing human keratin materials with a lightening effect with a composition comprising, in a cosmetically acceptable medium, at least one fluorescent dye that is soluble in the cosmetically acceptable medium and at least one surfactant chosen from amphoteric surfactants and nonionic surfactants. The present disclosure also relates to compositions comprising at least one particular fluorescent dye that is soluble in the cosmetically acceptable medium and at least one surfactant chosen from amphoteric surfactants and nonionic surfactants, and also to processes using these compositions, and devices for these compositions.

Abstract: The present invention relates to a method for dyeing keratin fibers especially human keratin fibers such as hair, characterized in that it consists in the following: a dyeing composition (A) is applied to the fibers, whereby said dyeing composition contains at least one oxidation dye precursor in an appropriate medium and optionally one or several couplers in addition to N-acetylcysteine as a reducing agent; the color is revealed in the presence of air in an alkaline, neutral or acidic medium with the aid of laccase, whereby said laccase is incorporated into composition (A) or composition (B); compositions (A) and (B) are immediately mixed before used or applied successively to keratin fibers.