Peptide-based conditioners and colorants for hair, skin, and nails

US7220405B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Xueying Huang · Hockessin, US
• Hong Wang · Kennett Square, US
• Ying Wu · Wallingford, US

Key dates

• Filing date: Sep 7, 2004
• Grant date: May 22, 2007
• Expiry date: Jan 2, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/94
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Peptides have been identified that bind with high affinity to hair, skin, and nails. Peptide-based hair conditioners, hair colorants, skin conditioners, skin colorants, and nail colorants are described. The peptide-based hair conditioners and hair colorants consist of a hair-binding peptide coupled to a hair conditioning agent or a coloring agent, respectively. The peptide-based skin conditioners and skin colorants consist of a skin-binding peptide coupled to a skin conditioning agent or a colorant, respectively. The peptide-based nail colorants consist of a nail-binding peptide coupled to a coloring agent. In all these compositions, the peptide may be directly coupled to the active agent or the coupling may be via a spacer. Personal care compositions containing these peptide-based conditioners and colorants are also described.