Hair dye

US3973900A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Hans Husemeyer · Darmstadt, DE
• Eugene Konrad

Key dates

• Filing date: Sep 9, 1974
• Grant date: Aug 10, 1976
• Expiry date: Sep 9, 1994

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q5/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Hair dyeing compositions containing a dye which has the formula ##SPC1## Wherein R.sub.1 and R.sub.2 are each hydrogen or hydroxy ethyl alone or in conjunction with an oxidation and/or direct dyeing dye. The hair dyeing compositions can also include the conventional additives such as water soluble surface active agents, thickening agents, complex formers, antioxidants, softeners, perfumes, and the like.