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US 12,622,858 B2Granted
Additives for coloring agents and methods of use thereof
AssigneeLiving Proof, Inc.
InventorsSoo-Young Kang, Zhaoxia Ji, Dinara A. Villanueva, Nawodi Abeyrathna
Life of this patent
Estimating the term…
Abstract
Disclosed are methods for coloring hair, comprising applying a mixture comprising one or more hair dyes and an additive as a pre-treatment, as a simultaneous treatment, as a post-treatment, or a combination thereof.
Claims6
A method for coloring hair, comprising:
- i) providing a hair sample;
- ii) applying a composition comprising an additive in a concentration of about 0.25% by weight to about 15% by weight of the total weight of the composition to the hair sample for a period of time, thereby producing a treated hair sample, wherein the additive is N-acetyl-L-cysteine;
- and
- iii) applying to the treated hair sample a mixture, comprising one or more hair dyes, thereby producing a color-treated hair sample.
1 more element
A method for coloring hair, comprising:
- i) providing a hair sample;
- ii) applying to the hair sample for a period of time a mixture, comprising one or more hair dyes, thereby producing a color-treated hair sample;
- and
- iii) applying a composition comprising an additive in a concentration of about 0.25% by weight to about 15% by weight of the total weight of the composition to the color-treated hair sample, wherein the additive is a combination of citric acid and gluconolactone.
1 more element
Dependencies are inferred from the claim text.