Patent ID: 6395042
Filing Date: 2002-05-28
Classification: A61K,A61Q

Abstract:
A composition for the oxidation dyeing of keratin fibres comprising, in a medium which is suitable for dyeing:(a) at least one oxidation base, and (b) at least two couplers, wherein the first coupler is chosen from 1,3-bis(2-hydroxyethyl)amino-2-methylbenzene and an addition salt thereof with an acid; and the second coupler is chosen from a heterocyclic coupler chosen from indole derivatives, indoline derivatives, benzimidazole derivatives, benzomorpholine derivatives, sesamol derivatives, pyrazoloazole derivatives, pyrroloazole derivatives, imidazoloazole derivatives, pyrazolopyrimidine derivatives, pyrazoline-3,5-dione derivatives, pyrrolo(2,3-d)oxazole derivatives, pyrazolo(3,4-d)thiazole derivatives, thiazoloazole S-oxide derivatives, thiazoloazole S,S-dioxide derivatives, pyridine derivatives and the addition salts thereof with an acid, provided that if said dye composition contains at least one oxidation base chosen from a pyrimidine base, 2-&bgr;-hydroxyethyl-para-phenylenediamine, and an addition salt thereof with an acid, then the heterocyclic coupler is other than a pyridine coupler.