Patent · US Active

Method for dyeing keratin material by means of a dyeing agent and an acidic posttreatment agent

US11529304B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Costanze Neuba · Grevenbroich, DE
Sandra HILBIG · Bochum, DE
Daniela Kessler-Becker · Leverkusen, DE
Torsten Lechner · Langenfeld, DE

Key dates

Filing date	Sep 25, 2019
Grant date	Dec 20, 2022
Priority date	—
Expiry date	Sep 25, 2039

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/88
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A process and a kit-of-parts are provided for dyeing keratinous material, in particular human hair. The process includes applying a coloring agent (a) to the keratinous material, the agent (a) comprising (a1) at least one amino-functionalized silicone polymer, (a2) at least one color-imparting compound, and (a3) at least one nonionic surfactant. The process further includes applying a post-treatment agent (b) to the keratinous material, the agent (b) comprising (b1) at least one acid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.