Agent and method for oxidative hair coloring which are gentle on keratin fibers

US9993406B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Hartmut Manneck · Klein Wesenberg, DE
• Thomas Hippe · Appen, DE
• Stefan Hoepfner · Hamburg, DE
• Jessica BRENDER · Hamburg, DE

Key dates

• Filing date: Jan 19, 2017
• Grant date: Jun 12, 2018
• Expiry date: Jan 19, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/882
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Coloring agents for keratin fibers, in particular for human hair, include—based on their weight—at least one compound selected from the group of oxidation dye precursors, substantive dyes and mixtures thereof, 0.1 to 5% by weight dicarboxylic acid(s) having 2 to 10 carbon atoms and/or salt(s) of said acid(s), 20 to 95% by weight water and less than 0.1% by weight peroxide compound(s), result in oxidative coloring agents with improved fiber protection.