Method for dyeing keratinous material, comprising the use of an organosilicon compound, a dyeing compound, a sealing reagent, and a pre-treatment agent

US12357549B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Jing Hodes · Hagen, DE
• Gabriele Weser · Neuss, DE
• Ulrike Schumacher · Dressendorf, DE
• Claudia Kolonko · Remscheid, DE
• Caroline Kriener · Dressendorf, DE

Key dates

• Filing date: Jan 17, 2022
• Grant date: Jul 15, 2025
• Expiry date: Apr 14, 2042

Classification

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

Abstract

A method for dyeing keratinous material, in particular human hair, may include applying a first agent to the keratinous material. The first agent may include hydrogen peroxide. The method may further include applying a second agent to the keratinous material. The second agent may include at least one organosilicon compound from the group of silanes having one, two, or three silicon atoms. The method may further include applying a third agent to the keratinous material where the third agent includes at least one sealing reagent. At least one of the second or third agents may further include at least one dyeing compound from the group consisting of pigments and/or direct dyes.