Patent ID: 8668745

Claim:
An agent for lightening keratinic fibers, wherein the agent comprises, in a cosmetically acceptable carrier, (i) at least one acyl pyridinium derivative of formula (I), in which R1 denotes 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 2 -C 6 alkyl group, an aryl C 1 -C 6 alkyl group, a heteroaryl C 1 -C 6 alkyl group, an aryl group or a heteroaryl group, R2, R3 and R4 each independently of one another denote hydrogen, a C 1 -C 6 alkyl group, a halogen atom or a C 1 -C 6 acyl group, with the proviso that at least one of the residues R2, R3 and R4 denotes a C 1 -C 6 acyl group, X − denotes a physiologically acceptable anion, (ii) at least one alkalizing agent, wherein the alkalizing agent consists of one or more amino acid and one or more alkanolamine, and (iii) at least hydrogen peroxide as an oxidizing agent.