Colorants in foam form

US8734530B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Frank Janssen · Amsterdam, NL
• Jurgen Schopgens · Schwalmtal, DE
• Sabine Babiel · Moers, DE
• Armin Wadle · Erkrath, DE
• Udo Erkens · Willich, DE

Key dates

• Filing date: Jan 14, 2013
• Grant date: May 27, 2014
• Expiry date: Jan 14, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/30
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

An agent in foam form for coloring keratin-containing fibers, in particular human hair, under induction by atmospheric oxygen and methods for coloring keratin-containing fibers using such agent is provided. In an embodiment, the agent comprises, in a cosmetically acceptable carrier, at an alkaline pH of 8 to 10.5, (a) as a color-forming component in the form of a dye precursor of a nature-analogous dye an indole and/or indoline derivative, (b) an alkalizing agent, and (c) a propellant, the agent containing no additional oxidizing agent for the color-forming components.