Methods for preparing hair coloring compositions

US8398724B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Juergen Schmenger · Weiterstadt, DE
• Manfred Schmitt · Munich, DE

Key dates

• Filing date: Jan 18, 2012
• Grant date: Mar 19, 2013
• Expiry date: Jan 18, 2032

Classification

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

Abstract

Methods for providing, at the discretion of the user, at least two different oxidative hair coloring compositions providing different level of lift based on a single tint component. The methods involve the use of a tint component, an oxidizing component and a third component comprising a non-ammonia alkalizing agent. The compositions may comprise little or no ammonia.