Ralph Nemitz

Bleaching agent having cationic acyl pyridinium derivatives, co-bleaching activators and hydrogen peroxide

Product for lightening the color of keratinic fibers, especially hair, comprises an acylpyridinium derivative, an imidazole compound and hydrogen peroxide

Novel coupling components

BLEACHING AGENT COMPRISING 2-ACYLPYRIDINIUM DERIVATIVES

Brightening agent composed of molded bodies and containing acylpyridinium compounds

CATIONIC ACYLPYRIDINIUM DERIVATIVES FOR USE AS BLEACH ACTIVATORS

Method for producing aromatic aldehydes

Brightening agent comprising cationic 3,4-dihydroisoquinoline derivatives and hydrogen peroxide

Cationic dihydroisoquinolinium derivatives for use as bleach activators

Composition, useful for coloring and optionally simultaneous lightening of keratin fibers, preferably human hair, comprises a cationic compound containing a substituted dimethyl-(2-oxo-(1,3)dioxolan-4-yl-methyl)-ammonium compounds