Patent ID: 8840682

Claim:
An aqueous composition for keratin fibers comprising at least one oxidizing agent, at least one alkalizing agent selected from the compounds according to general structure R 1 R 2 R 3 N wherein R 1 , R 2 and R 3 are same or different H, C 1 -C 6 alkyl, C 1 -C 6 monohydroxyalkyl or C 2 -C 6 polyhydroxyalkyl with the condition that at least one of R 1 , R 2 and R 3 is a mono or polyhydroxyalkyl, at least one carbonate source, at least one compound with bleaching effect present at a concentration of between 30-60 wt. %, calculated to the total composition, and at least one urea or urea derivative selected from the compounds according to general structure wherein R 4 to R 7 are same or different H, C 1 -C 6 alkyl, C 1 -C 6 monohydroxyalkyl or C 2 -C 6 polyhydroxyalkyl.