Patent · US Active

Method for dyeing keratinous material, containing dye and an acidic post-treatment agent

US11529303B2 · kind B2 · utility

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19Claims

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Assignee

Henkel AG & Co. KGaA · DE

Inventors

Marc Nowottny · Genhülsen, DE
Torsten Lechner · Langenfeld, DE
Sofie Baumann · Remscheid, DE

Key dates

Filing date	Nov 7, 2019
Grant date	Dec 20, 2022
Priority date	—
Expiry date	Nov 7, 2039

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/884
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A kit-of-parts and a process for dyeing keratinous material, such as human hair, are provided. The method includes applying a coloring agent (a) to the keratinous material, wherein the agent (a) includes (a1) at least one amino-functionalized silicone polymer, and (a2) at least one color-imparting compound, and (a3) optionally, a film-forming polymer different from (a1). The method further includes applying a post-treatment agent (b) to the keratinous material, wherein the agent (b) includes (b1) at least one acid, and (b2) optionally, a film-forming polymer. In the method, at least one of the agents (a) and/or (b) comprises at least one film-forming polymer.

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