Permanent waving method with improved nourishing and wave effect

US10925369B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Birgit Rautenberg-Groth · Ellerau, DE
• Matthias Schweinsberg · Langenfeld, DE

Key dates

• Filing date: Oct 27, 2016
• Grant date: Feb 23, 2021
• Expiry date: Apr 30, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/884
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A method for permanently changing the shape of keratinic fibres and a kit-of-parts comprising the agents (a), (b) and (c) packaged separately. The method comprises applying a permanent waving agent (a) to the keratinic fibres, leaving agent (a) to take effect for a period of from 2-60 minutes, rinsing out the agent (a) from the keratinic fibres, applying agent (b) to the keratinic fibres, leaving agent (b) to take effect for a period of from 2-60 minutes, rinsing out agent (b) from the keratinic fibres, applying agent (c) to the keratinic fibres, leaving agent (c) to take effect for a period of from 2-60 minutes, and rinsing out agent (c) from the keratinic fibres. The permanent waving agent (a) includes one or more keratin-reducing compounds, the cosmetic agent (b) includes one or more aliphatic C2-C8 dicarboxylic acids and/or physiologically acceptable salts thereof, and the fixing agent (c) includes hydrogen peroxide.