Agent and method for permanent waving

US6506373B1 · kind B1 · utility

Assignee

• Wella GmbH · DE

Inventors

• Beate Dannecker · Darmstadt, DE
• Dirk Lauscher · Seeheim-Jugenheim, DE
• Birgit Schreiber · Lindenfels, DE

Key dates

• Filing date: Jul 11, 2000
• Grant date: Jan 14, 2003
• Expiry date: Jul 11, 2020

Classification

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

Abstract

The oxidative hair treatment composition is made by mixing several components immediately prior to application on the hair. One component contains dehydroascorbic acid, its derivatives or salts or their mixture, is anhydrous or contains up to 10% by weight of water, and is a powder, granulate or tablet or micro-encapsulated or a suspension and another component is an aqueous, alcoholic or aqueous alcoholic preparation. In order to avoid an unpleasant mercaptan odor and provide a uniform treatment the method for permanently waving hair includes putting the hair into the desired form, treating it with a keratin-reducing agent, and then rinsing it, after which it is treated oxidatively with the above-described oxidative treatment composition and rinsed once again.