Abstract: Cosmetic compositions comprising at least one compound (a) and/or at least one complexing agent (b) for complexing the at least one compound (a), and, optionally covalently attached to the at least one compound (a) and/or the at least one complexing agent (b), and optionally at least one cosmetic active agent; processes for treating a keratin material that are based on these compositions, aimed at creating on the keratin material a deposit that gives novel cosmetic properties.

Abstract: The invention relates to a cosmetic hair treatment process comprising non-reducing activation of the hair, and then applying to the activated hair at least one cosmetically active compound capable of forming a covalent bond with the activated hair with the aid of one or more functional groups of the compound.

Abstract: Disclosed herein are a cosmetic composition comprising at least one diazirine active-agent compound comprising a diazirine covalently bonded to a cosmetic active agent, said at least one diazirine-active agent compound and the uses of the composition or of the compound, as well as cosmetic treatment processes using the composition or the compound.

Abstract: The present invention relates to the use of organomodified metallic nanoparticles preferably bearing at their surface a self-assembled monolayer of organosulphur compounds. A preferred use is in suspension form for dyeing and/or treating human keratin fibers. The invention also relates to a process for dyeing and/or treating human keratin fibers, by the application to the keratin fibers of such a suspension, and also to compositions used to perform such a process. The invention includes the colouring and/or treating of human keratin fibers, in particular the hair, with the invention suspension. Compositions of the nanoparticles with cosmetic active principles, and uses thereof, also are described.

Abstract: The present invention relates to a cosmetic treatment process for giving keratin fibres shampoo-remanent cosmetic properties, which consists in reducing, in a cosmetically acceptable medium, at least one metal salt in the presence of at least one reducing agent, directly on the keratin fibre to form the corresponding native metal in situ.

Abstract: The present invention relates to the use of a cosmetic composition for treating keratin materials, comprising at least one hydrophobin, and also to processes for cosmetically treating keratin materials.

Abstract: This invention relates generally to the use, for example in the cosmetics field and in particular for the treatment and styling of the hair, of an aqueous dispersion of particles of the nucleus/casing (core/shell) type containing compounds with reactive silyl functions, as well as to a process for treatment and a process for styling of the hair using such an aqueous dispersion. The dispersions and particles also make up a part of this invention, as do their methods of manufacture.

Abstract: The present invention relates to cosmetic compositions comprising a biotin derivative and/or an agent for complexing this derivative and, covalently bonded to one of these two compounds or to both of them, at least one active agent other than dyes.

Abstract: Cosmetic compositions comprising at least two polymers comprising complementary chemical functional groups, capable of forming a coat on a keratin material, such as hair, a cosmetic process comprising the use of these polymers on the keratin material, such as the hair, and also their use for producing a coat on the hair.

Abstract: The invention relates to a photoactivatable compound comprising a support molecule chosen from carbon-containing and/or sulfur-containing and/or nitrogen-containing and/or phosphorus-containing nonpolymer compounds, polymers and oligomers and to which are covalently bonded at least two species containing chemical groups which, after irradiation between 200 et 450 nm, are converted into reactive species capable of reacting with chemical groups belonging to other molecules. The invention also relates to a cosmetic composition comprising at least one photoactivatable compound according to the invention, and also to a cosmetic treatment process using this composition.