Patent · US Active

Composition for lightening or dyeing keratin fibers with a low amount of alkalizing agent

US11219587B2 · kind B2 · utility

0Cited by

1References

18Claims

0Family size

Assignee

WELLA OPERATIONS US, LLC · US

Inventors

Axel Meyer · Frankfurt am Main, DE
Andrej Gross · Darmstadt, DE
Bjoern Hoffmann · Darmstadt, DE
Simon Paul Godfrey · Uxbridge, GB
Lina Makavou-Jennen · Darmstadt, DE

Key dates

Filing date	Sep 14, 2017
Grant date	Jan 11, 2022
Priority date	—
Expiry date	Sep 14, 2037

Classification

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

Abstract

An agent for dyeing keratin fibers comprises a composition A comprising at least one alkalizing agent, at least one oxidative dye precursor, at least one surfactant and at least one fatty substance free of carboxylic acid groups and a composition B comprising at least one oxidizing agent and at least one surfactant. The concentration of fatty substances free of carboxylic acid groups after mixing composition A and composition B is at least 20% by weight relative to the total weight of the mixed composition A and B. The concentration of alkalizing agent after mixing composition A and composition B is not more than 1.75% by weight relative to the total weight of the mixed composition A and B.

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