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US 10,881,596 B2Granted
Cosmetic composition for enhancing properties of pre-colored keratin fibers
AssigneeKao Germany GmbH
InventorsNormen Lipinski, Andreas Picker
Life of this patent
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Abstract
The present invention is on a cosmetic composition for improving color brilliance and wash fastness of artificially-colored keratin fibers. The effect is achieved by the combination of pyrrolidone carboxylic acid esters, pyrrolidone carboxylic acid and/or its salts, and amodimethicone microemulsion. A process for treating keratin fibers, a use of the composition and well as a kit-of-parts is disclosed.
Claims13
An aqueous cosmetic composition comprising:
- a) at least one compound according to the general structure
- wherein R1 is selected from straight, saturated, or unsaturated alkyl chain between C12 and C20 or branched, saturated or unsaturated alkyl chain with C12 to C20;
- b) pyrrolidone carboxylic acid and/or its salt;
- and
- c) amodimethicone in the form of a microemulsion wherein the microemulsion of amodimethicone is an emulsion with a droplet size in the range of 50 nm to 1000 nm.
2 more elements
Dependencies are inferred from the claim text.