Colorants

US6537330B1 · kind B1 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Horst Hoeffkes · Goldkronach, DE
• Klaus Schumann · Weil am Rhein, DE
• Winifried Neuhaus · Goldkronach, DE

Key dates

• Filing date: Jun 23, 1999
• Grant date: Mar 25, 2003
• Expiry date: Jun 23, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K8/64
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A composition for coloring keratin fibers, containing an indoline, an indole, or a derivative thereof in combination with at least one amino acid or oligopeptide. The composition is useful for coloring human hair and restoring grey hair to its natural color. The formulation can be applied with atmospheric oxygen as the sole oxidizing agent.