Patent ID: 7981166

Claim:
Agent for lightening keratin fibers comprising, in a cosmetic carrier: (i) at least one cationic acyl pyridinium derivative according to formula (I) wherein R is a C 1 -C 6 alkyl group, a C 2 -C 6 alkenyl group, a C 2 -C 6 hydroxyalkyl group, a C 1 -C 6 -alkoxy-C 2 -C 6 -alkyl group, a carboxy-C 1 -C 6 -alkyl group, an aryl-C 1 -C 6 -alkyl group, a heteroaryl-C 1 -C 6 -alkyl group, a mono- or di-C 1 -C 6 -alkylamino-C 2 -C 6 -alkyl group, a 3-oxobutyl group, a 2-oxopropyl group, an aryl group or a heteroaryl group; R′ is a C 1 -C 4 alkyl group, a C 2 -C 6 hydroxyalkyl group or a C 1 -C 6 -alkoxy-C 2 -C 6 -alkyl group; and X − is a physiologically acceptable anion; (ii) at least one toxicologically safe co-bleach activator and/or the physiologically acceptable salt thereof; and (iii) hydrogen peroxide.