Patent ID: 7905926
Filing Date: 2011-03-15
Classification: A61K,A61Q

Abstract:
1. A method of permanently coloring hair comprising the steps of: (a) providing a color base composition containing at least one primary dye intermediate chosen from ortho aminophenols, para aminophenols, ortho phenylenediamines, para phenylenediamines, double bases, heterocyclic bases, the acid addition salts thereof, and mixtures thereof; (b) applying the color base composition onto the hair; (c) optionally, rinsing the color base composition from the hair; (d) providing a developer composition comprising at least one oxidizing agent chosen from persulfates, perborates, percarbonates, their salts, and mixtures thereof wherein the developer composition does not contain hydrogen peroxide; and (e) applying the developer composition onto the hair in order to develop a color, in situ, in the hair, the developer composition being applied up to 60 minutes after application of the color base composition.