Patent ID: 7553337

Claim:
An agent for the simultaneous brightening and coloring of keratin fibers, wherein the agent contains an oxidant and at least one thiazolium dye of formula (I) and has a basic pH wherein R1 stands for a saturated or unsaturated (C1-C12)-alkyl group, a halogen atom-substituted (C1-C12)-alkyl group, a hydroxy-(C1-C12)-alkyl group, a (C1-C6)-alkoxy-(C1-C12)-alkyl group, an amino-(C1-C12)-alkyl group, a (C1-C6)-alkylamino-(C1-C12)-alkyl group, a di(C1-C6)-alkylamino-(C1-C12)-alkyl group, a cyano-(C1-C12)-alkyl group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted benzyl group; R2 and R3 can be equal or different and independently of each other stand for hydrogen, a halogen atom, a saturated or unsaturated (C1-C12)-alkyl group, a (C1-C12)-alkoxy group, a nitro group, an amino group, a (C1-C12)-alkylamino group, a di(C1-C12)-alkylamino group, a (C1-C12)-hydroxyalkylamino group, a di(C1-C12)-hydroxyalkylamino group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted heteroaryl group; R4 stands for hydrogen, a saturated or unsaturated (C1-C12)-alkyl group, a halogen atom-substituted (C1-C12)-alkyl group, a hydroxy-(C1-C12)-alkyl group, an amino-(C1-C12)-alkyl group or a benzyl group; R5 and R6 can be equal or different and independently of each other stand for hydrogen, a halogen atom, a saturated or unsaturated (C1-C12)-alkyl group, a hydroxyl group, a (C1-C12)-alkoxy group, a cyano group, a nitro group, an amino group, a (C1-C12)-alkylamino group or a di(C1-C12)-alkylamino group and A − stands for an anion of an organic or inorganic acid.