The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, in which said fibres are treated using one or more cosmetic compositions comprising a) one or more dye(s), b) one or more titanium salts and b1) optionally at least one carboxylic acid, and c) one or more anionic thickening polymers derived from the polymerization of at least one monomer bearing an organic monoacid function, and d) optionally one or more chemical oxidizing agents such as hydrogen peroxide or one or more hydrogen peroxide-generating systems.

An aerosol product comprising an aerosol container comprising a container body and an aerosol valve fixed to an opening of the container body, and an aqueous concentrate and a propellant being filled in the aerosol container, wherein the aqueous concentrate comprises an active ingredient having reactivity with oxygen, and an inert ingredient is present in at least a part of an injection passage of the aerosol valve, even though the aqueous concentrate comprising an active ingredient having reactivity with oxygen is filled, oxidation of the active ingredient is inhibited in the aerosol valve, and an aerosol product that can be stored stably for a long period of time and a method for manufacturing the same can be provided.

The subject of the present invention is a composition for dyeing human keratin fibres such as the hair, comprising: (a) at least one colouring agent chosen from oxidation dye precursors, direct dyes and mixtures thereof; (b) at least one amphoteric or zwitterionic surfactant; (c) at least one non-ionic surfactant; (d)at least one anionic surfactant (e) one or more fatty substances at a total content of at least 10% by weight relative to the weight of the composition; (f) at least one cationic polymer; (g) at least one oxidizing agent other than atmospheric oxygen. The present invention also relates to a process for dyeing human keratin fibres, in which this composition is applied to said fibres, and also to a suitable multicompartment device.

Agents for oxidatively dyeing of keratinic fibers include in a cosmetic carrier, (A) as a developer, 4,5-diamino-1-(2-hydroxyethyl)-1H-pyrazole and/or one of the physiologically acceptable salts thereof, (B) as a developer, p-aminophenol and/or one of the physiologically acceptable salts thereof, (C) as a coupler, 2,6-bis(2′-hydroxyethylamino)-1-methylbenzene and/or one of the physiologically acceptable salts thereof, and (D) as a coupler, at least one m-dihydroxybenzene derivative from the group consisting resorcinol, 2-methylresorcinol and/or 4-chlororesorcinol as coupler.

The present invention relates to a process for dyeing or bleaching keratin fibers, comprising the application to the keratin fibers of a composition comprising a high content of one or more particular amino acids followed by the application of a dyeing or bleaching composition.

The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, in which said fibres are treated using one or more cosmetic compositions comprising a) one or more dye(s), b) one or more titanium salts and optionally b1) at least one carboxylic acid, and c) one or more insoluble silicates and d) optionally one or more chemical oxidizing agents such as hydrogen peroxide or one or more hydrogen peroxide-generating systems.

The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, in which said fibres are treated using one or more cosmetic compositions comprising a) one or more dyes chosen from synthetic direct dyes and dyes of natural origin, b) one or more titanium salts and b1) optionally one or more particular carboxylic acids, c) one or more cellulose-based polysaccharides, d) optionally one or more organic compounds that are liquid at 25° C., with a Hansen solubility parameter value δH<16 (MPa).sup.1/2 at 25° C., e) optionally one or more chemical oxidizing agents such as hydrogen peroxide or one or more hydrogen peroxide-generating systems.

The invention relates to novel cationic benzoxazine-based compounds of formula (I) below, in which •R represents a hydrogen atom or a C.sub.1-C.sub.4 alkyl or C.sub.1-C.sub.4 hydroxyalkyl radical, •—R.sub.2, R.sub.3, R.sub.4 and R.sub.5 independently represent: —a hydrogen atom, —a linear C.sub.1-C.sub.4 or branched C.sub.3-C.sub.4 alkyl radical, optionally substituted with a hydroxyl radical, •L represents a linear or branched, saturated C.sub.1-C.sub.30 hydrocarbon-based chain, •CAT+ represents a cationic radical chosen from: —a cationic heterocyclic radical comprising 5 to 8 ring members containing at least one heteroatom chosen from O, N and S, —a tri(hydroxy)(C.sub.1-C.sub.4)alkylammonium radical, —a non-cationic heterocycle comprising 5 or 6 ring members containing at least one heteroatom chosen from O and N, such as pyrrolidine, substituted with a cationic radical, An− represents an anion or a mixture of anions which are organic or inorganic and are cosmetically acceptable.

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Disclosed is a hair colouring composition containing amino acids with at least a pKa greater than 10, oxidative dyes, and acetylaspartic acid or salts thereof. The compositions according to the invention do not contain ammonia or ethanolamine, do not damage the hair, guarantee shine and combability, and also cover white hair and withstand blue light.

The present invention relates to a process for treating keratin fibers, comprising a step of applying to the keratin fibers a composition comprising a high content of one or more particular amino acids followed by a step of permanent reshaping of the keratin fibers.