Composition comprising a derivative of hermatoxylin, of hematein, of brazilin or of brazilein, metal salt, hydrogen peroxide, and (bi)carbonate and hair dyeing method therewith

US7833290B2 · kind B2 · utility

Assignee

• L'Oreal S.A. · FR

Inventors

• Frederic Guerin · Paris, FR
• Luc Gourlaouen · Asnières, FR

Key dates

• Filing date: Dec 14, 2009
• Grant date: Nov 16, 2010
• Expiry date: Dec 14, 2029

Classification

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

Abstract

The disclosure relates to methods for dyeing keratinous fibers by treatment of said fibers with i) at least one entity chosen from hematoxylin, hematein, brazilin, brazilein, and their derivatives, ii) at least one metal salt, iii) hydrogen peroxide or at least one system which generates hydrogen peroxide and iv) at least one (bi)carbonate. The disclosure also relates to multicompartment devices and compositions comprising the ingredients i), ii), iii) and iv).