Patent ID: 6428580
Filing Date: 2002-08-06
Classification: A61K,A61Q

Abstract:
An oxidizing system for reforming cystine and for developing oxidative color in keratinous fibers comprising:ascorbic acid, an oxidizing agent capable of generating an oxidizing potential of from 100 to 500 millivolts in said system, wherein said ascorbic acid and said oxidizing agent are included in said system in a ratio effective for reforming cystine during a permanent wave or oxidation dyeing process without excessive formation of cysteic acid to weaken said keratinous fibers, said ratio of ascorbic acid:oxidizing agent ranging from 1:2 to 1:10, and at least one metal ion in a catalytically effective amount, wherein said system has a pH ranging from 2 to 10, and further wherein said system does not bleach or discolor said keratinous fibers.