Oxidation dyeing process using a composition rich in fatty substances and metal catalysts, and device suitable therefor
The present invention relates to a process for dyeing keratin fibers, in particular human keratin fibers such as the hair, comprising the use of one or more metal catalysts chosen from transition metal salts and rare-earth metal salts, and mixtures thereof and a composition (I) comprising at least 10% by weight of one or more fatty substances different from fatty acids, one or more oxidation dyes and one or more oxidizing agents.
1. A process for dyeing keratin fibres, comprising the use of one or more metal catalysts chosen from transition metal salts and rare-earth metal salts, and mixtures thereof, and of a composition (I) comprising:
at least 10% of one or more fatty substances different from fatty acids relative to the total weight of composition (I),
one or more oxidation dyes, and
one or more oxidizing agents;
wherein the one or more metal catalysts and the composition (I) provide a homogeneous coloration along the keratin fibres, when applied to the keratin fibres.
2. The process according to claim 1 , characterized in that the metal salts are inorganic salts chosen from halides, carbonates, sulfates and phosphates.
3. The process according to claim 1 , characterized in that the metal salts are organic acid salts chosen from citrates, lactates, glycolates, gluconates, acetates, propionates, fumarates, oxalates and tartrates.
4. The process according to claim 1 , characterized in that the metal catalysts are chosen from organic acid salts of transition metals, and inorganic salts of rare-earth metals.
5. The process according to claim 1 , characterized in that the fatty substances are chosen from C 6 -C 16 hydrocarbons and hydrocarbons containing more than 16 carbon atoms and oils of plant origin, fatty alcohols, fatty acid and/or fatty alcohol esters, and silicones, or mixtures thereof.
6. The process according to claim 1 , characterized in that the fatty substance(s) are chosen from oils that are liquid at room temperature and at atmospheric pressure.
7. The process according to claim 1 , characterized in that the fatty substances are chosen from liquid petroleum jelly, polydecenes, liquid fatty alcohols and liquid esters of fatty acids or of fatty alcohols, or mixtures thereof.
8. The process according to claim 1 , characterized in that the fatty substances are present in a content ranging from 10% to 70% by weight, relative to the total weight of composition (I).
9. The process according to claim 1 , characterized in that the cosmetic composition (I) also comprises one or more surfactants.
10. The process according to claim 1 , characterized in that the oxidation dyes are chosen from oxidation bases and/or couplers.
11. The process according to claim 10 , characterized in that the oxidation bases are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases and the addition salts thereof, and the couplers are chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols, monophenols, naphthalene-based couplers and heterocyclic couplers, and also the addition salts thereof.
12. The process according to claim 1 , characterized in that the oxidation dyes are chosen from mixtures of at least one heterocyclic oxidation base, and of at least one monophenolic coupler.
13. The process according to claim 1 , characterized in that the oxidizing agent is hydrogen peroxide.
14. The process according to claim 1 , characterized in that a composition (A) comprising the said metal catalyst(s) and composition (I) are mixed together, and the mixture made is then applied to wet or dry keratin fibres.
15. The process according to claim 1 , characterized in that a composition (A) comprising the said metal catalyst(s) and composition (I) are successively applied to wet or dry keratin fibres, with or without intermediate rinsing.
16. The process according to claim 1 , characterized in that composition (I) results from the mixing of two or three compositions including at least one composition (B) comprising one or more oxidation dyes and a composition (C) comprising one or more oxidizing agents and optionally a composition (D) comprising one or more fatty substances.
17. A multi-compartment device comprising a first compartment containing a cosmetic composition (A) comprising one or more metal catalysts chosen from transition metal salts and rare-earth metal salts, and mixtures thereof, a second compartment containing a cosmetic composition (B) comprising one or more oxidation dyes, and a third compartment containing a composition (C) comprising one or more oxidizing agents, at least one fatty substance different from fatty acids as defined in claim 1 , the fatty substances being present in at least one of the compositions (B) or (C) such that, after mixing together the compositions (B) and (C), the fatty substance content is greater than or equal to 10% relative to the total weight of the mixture of compositions (B) and (C), and optionally a fourth compartment comprising a composition (D) comprising one or more fatty substances, the said composition (D) being intended to be mixed with compositions (B) and (C), the fatty substance content being greater than or equal to 10% relative to the total weight of the mixture of compositions (B), (C) and (D), composition (B) or (C) optionally containing one or more fatty substances.
18. The process according to claim 12 , characterized in that the at least one monophenolic coupler is chosen from guaicol, arbutin, thymol, sesamol, carvacrol or syringol.