The present invention relates an aldehyde dehydrogenase inhibitor for use in the treatment or prevention of fibrosis.

The present invention relates to a process for bleaching or dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising a step of application, to said fibres, of a composition (A) containing one or more chemical oxidizing agents and a step of irradiation of said fibres by means of UV-visible radiation having a wavelength ranging from 200 to 800 nm and a fluence ranging from 1 to 5000 J/cm.sup.2, after application of said composition (A); when the process is a process for dyeing keratin fibres, then one or more oxidation dyes is or are also used.

Disclosed are hair color bases, hair color compositions, and methods for altering the color of hair. Hair color bases comprise a buffer system including ammonium chloride, sodium metasilicate, ammonium hydroxide, and monoethanolamine (MEA). Hair color compositions comprise a hair base comprising a buffer system including ammonium chloride, sodium metasilicate, ammonium hydroxide, and monoethanolamine (MEA), and an oxidizing component.

The present invention relates to azomethine-type direct dyes having a triaromatic unit of formula (I) below: and also the use thereof for dyeing keratin fibers, in particular human keratin fibers such as the hair. The invention also relates to a composition for dyeing keratin fibers, comprising, in a medium suitable for dyeing, such direct dyes. Another subject of the present invention is a method for dyeing keratin fibers using said dye composition. Finally, the present invention also relates to precursors of these direct dyes. ##STR00001##

The invention concerns the use of compounds with formula (I) RN1-spermidine, or 1,4-butandiamin,N-(3-amino propyl)-N1-R, (I) H.sub.2N(CH.sub.2).sub.3N.sup.1(R)(CH.sub.2).sub.4NH.sub.2 either as such or in the form of a pharmaceutically acceptable derivative, such as an active ingredient in a cosmetic composition designed to promote hair pigmentation, particularly the pigmentation of the shaft, and a composition suitable to achieve said pigmentation effect and containing said active ingredient, either as such or in the form of a pharmaceutically acceptable derivative such as a salt, for topical administration.

The present invention relates to a hair coloring composition comprising in a cosmetically acceptable carrier one or more oxidizing agent(s), one or more alkalizing agent(s), one or more oxidative dye precursor(s) selected from the group consisting of 2-methoxymethyl-p-phenylenediamine, cosmetically acceptable salts thereof and mixtures thereof, one or more oil(s), wherein the composition comprises a total amount of oil(s) of more than 20%.

Disclosed is a method of dyeing keratin fibres, in particular hair, which involves: a) achieving the desired colour by mixing two or three compositions, each of which includes a single direct dye, magenta, blue or yellow, having similar performance characteristics b) adding the mixture obtained at step a) to a diluent composition; c) mixing and applying the composition obtained at step b) to the hair, optionally after checking the resulting colour by comparing it with reference standards.

Method for treating hair wherein a first hair treatment composition is applied to the hair, e.g. the hair roots and a second hair treatment composition is applied to the hair, e.g. the hair lengths and tips, wherein the pH of the second hair treatment composition is higher than the pH of the first hair treatment composition.

The invention relates to a composition comprising at least one particular dyeing base, at least one particular coupler, and at least one fatty substance, the total content of fatty substance being greater than or equal to 30% by weight, relative to the total weight of the composition.

A hair cosmetic containing the following components (A) and (B), wherein a mass ratio of the component (B) to the component (A), (B)/(A), is 0.25 or more and 1.90 or less: (A) an aromatic sulfonic acid or a salt thereof having a molecular weight of 300 or less; and (B) a cationic polymer having a cationic charge density of 3.3 meq/g or more and less than 4.5 meq/g.