Agents for oxidatively dyeing hair containing specific combinations of developers and couplers

US9655827B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Antje Gebert-Schwarzwaelder · Neuss, DE
• Annika Koenen · Grevenbroich, DE

Key dates

• Filing date: May 26, 2016
• Grant date: May 23, 2017
• Expiry date: May 26, 2036

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/88
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The subject matter of the invention relates to agents for oxidatively dyeing keratinic fibers, comprising, in a cosmetic carrier, (A) 4,5-diamino-1-(2-hydroxyethyl)-1H-pyrazole and/or one of the physiologically acceptable salts thereof as developer, (B) 2-(2,5-diaminophenyl)ethanol and/or one of the physiologically acceptable salts thereof as developer, (C) 2,6-bis(2′-hydroxyethylamino)-1-methylbenzene and/or one of the physiologically acceptable salts thereof as coupler, and (D) at least one m-dihydroxybenzene derivative from the group comprising resorcinol, 2-methylresorcinol, and/or 4-chlororesorcinol as coupler.