Oxidation dyeing composition for keratinous fibres...

A - Human Necessities – 61 – K

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A61K 8/72 (2006.01) A61K 8/18 (2006.01) A61Q 5/10 (2006.01)

Patent

CA 2411438

The invention concerns an oxidation dyeing composition for keratinous fibres, in particular human keratinous fibres such as human hair, comprising in a medium suited for dyeing, at least an oxidation dyeing precursor and/or a coupling agent selected among paraphenylenediamines, double bases, paraminophenols, heterocyclic bases and couplers, and the addition salts of said compounds with an acid, and at least an amphoteric polymer comprising a fatty chain having 8 to 30 carbon atoms. The invention also concerns dyeing methods and devices using said oxidation dyeing composition.

L'invention concerne une composition pour la teinture d'oxydation des fibres kératiniques, en particulier des fibres kératiniques humaines telles que les cheveux, comprenant dans un milieu approprié pour la teinture, au moins un précurseur de colorant d'oxydation et/ou un coupleur choisi parmi les paraphénylènediamines, les bases doubles, les para-aminophénols, les métaphénylènediamines, les méta-aminophénols, les métadiphénols, les bases et les coupleurs hétérocycliques, et les sels d'addition de ces composés avec un acide, et au moins un polymère amphotère comportant au moins une chaîne grasse ayant de 8 à 30 atomes de carbone. L'invention concerne également les procédés et dispositifs de teinture mettant en oeuvre ladite composition de teinture d'oxydation.

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