Gel network hair treatment compositions with reduced odor

US11696877B2 · kind B2 · utility

Assignee

• WELLA OPERATIONS US, LLC · US

Inventors

• Moussa Barhoum · Frankfurt, DE
• Pascale Smets · Strombeek-Bever, BE
• Frank Veverka · Zwingenberg, DE
• Manfred Schmitt · Munich, DE
• Ingrid Merere · Wemmel, BE
• Christine Marie Cahen · Virginia Water, GB

Key dates

• Filing date: Sep 6, 2017
• Grant date: Jul 11, 2023
• Expiry date: Sep 6, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/882
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to a hair colouring and/or bleaching composition comprising at least a first aqueous component (i) and a second aqueous component (ii) being mixed prior to application onto hair, wherein the first component (i) or the second component (ii) or both components (i) and (ii) comprise a gel-network system consisting of multi-lamellar sheets and vesicles with d-spacing (interlayer spacing between sheets) between 5 nm and 50 nm, preferably 10 nm to 30 nm, more preferred 15 nm to 25 nm as measured by Small Angle X-Ray Scattering (SAXS), and the first component (i) or the second component (ii) or both comprise at least a first malodor suppressant being a compound having a distribution coefficient log P of 2 or more and a molecular weight of between 100 and 400, a method for coloring or bleaching hair, a kit comprising the above components and the use of the described hair coloring composition for colouring and/or bleaching hair with a reduced or eliminated ammonia odour.