Wella Operations Us, LLC

Wella International Operations Switzerland Sarl

Frank Veverka

Manfred Guenther Schmitt

Christine Marie Cahen

Moussa Barhoum

Rebecca Knobloch

Ingrid Merere

Pascale Smets

Christine Cahen

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.

Gel network hair treatment compositions with reduced odor

It is provided herewith a hair treating product comprising an oxidizing component and a tint component; a hair treating composition obtained upon mixing of the oxidizing component and the tint component; the use of the oxidizing component in a hair treating product, for cancelling the alkalinity of a tint component; and an oxidizing component comprising a buffer system. The hair treating product, and the corresponding hair treating composition, is particularly useful for colouring or bleaching hair. It is useful for providing permanent or demi-permanent coloration or bleaching to keratin fibers.

Hair colouring or bleaching products, and compositions thereof, with alkali canceling effect

Growing community of inventors

Zwingenberg, Germany

Frank Veverka