Kao Corporation

Qi Uellner

Bernd Nöcker

Steven Breakspear

Peter Bauer

A composition having a pH in a range of 1 to 6, containing hydrogen peroxide, and one or more compounds selected from orthodiphenols, imidazolidin-2,4-diones, and salts thereof. The orthodiphenols have the following general structure: where R, R, and Rare independently selected from H, OH, halogen, C-Clinear or branched alkyl or alkenyl, O—X, NO, COOH, SOH, aryl, and heteroaryl, and X is a C-Clinear or branched alkyl. The imidazolidin-2,4-diones have the following general structure: where R, R, and Rare independently selected from H, OH, halogen, C-Clinear or branched alkyl or alkenyl, O—X, COOH, phenyl, diphenyl, ureyl, and X is a C-Clinear or branched alkyl.

Aqueous oxidative composition comprising orthodiphenols or imidazolidin-2,4-dione derivatives

A cosmetic product, including a composition A containing one or more alkalizing agents and one or more direct dyes, and an aqueous composition B having a pH in a range of 1 to 6. The aqueous composition B contains hydrogen peroxide, and one or more compounds selected from the following groups:

Cosmetic product for dyeing keratin fibers

A dyeing composition for keratin fibers, containing one or more alkalizing agents, one or more direct dyes, and one or more compounds selected from the following groups:

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Darmstadt, Germany

Qi Uellner