Patent ID: 6919073

Claim:
A method of preparing a ready-to-use composition for bleaching human keratin fibers, comprising: mixing, at the time of application, a pulverulent composition with an aqueous hydrogen peroxide composition having a hydrogen peroxide titre of not more than 40 volumes, the pulverulent composition comprising, in a medium that is suitable for bleaching: at least one peroxygenated salt; at least one amphiphilic polymer chosen from nonionic amphiphilic and anionic amphiphilic polymers, the at least one amphiphilic polymer comprising at least one fatty chain; and at least one fatty acid sugar ester comprising at least one sugar residue and at least one C 12 -C 24 fatty acid residue, the at least one fatty acid sugar ester being present and in an amount of less than 10% by weight relative to the total weight of the composition.