Patent ID: 7651539
Filing Date: 2010-01-26
Classification: A61K,A61P,A61Q

Abstract:
1. A composition for dyeing keratin fibers, comprising, in a suitable dyeing medium: at least one oxidation base chosen from 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one of formula (I) below, and addition salts thereof: at least one coupler; at least one surfactant chosen from oxyalkylenated and glycerolated fatty alcohols, anionic surfactants of sulfate or sulfonate type and amphoteric surfactants of betaine type; and at least one oxidizing agent; wherein the pH of the composition ranges from 5.5 to 7.5; and with the proviso that when the composition comprises an oxyalkylenated or glycerolated fatty alcohol, it is free: of 3-amino-2-methylamino-6-methoxypyridine; of fatty-chain cationic polyurethane obtained from the condensation of 1,3-bis(isocyanatomethylcyclohexane)N,N-dimethylethanolamine quaternized with bromodecane N,N-dimethylethanolamine and polyoxyethylene; of a polycondensate of polyethylene glycol comprising 150 or 180 mol of ethylene oxide, decyl alcohol and methylenebis(4-cyclohexyl isocyanate); of mixtures of cetearyl alcohol polyglycerolated with 2 mol of glycerol and of cetearyl alcohol polyglycerolated with 6 mol of glycerol; and of hexylene glycol.