Patent · US Active

Process for oxidative dyeing hair

US10398634B2 · kind B2 · utility

0Cited by

1References

17Claims

0Family size

Assignee

KAO GERMANY GMBH · DE

Inventors

Bernd Nöcker · Darmstadt, DE
Steven Breakspear · Darmstadt, DE
Anja Aechtner · Darmstadt, DE
Manfred Durr · Bad Sobernheim, DE

Key dates

Filing date	Mar 15, 2016
Grant date	Sep 3, 2019
Priority date	—
Expiry date	Mar 15, 2036

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/882
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to a hair dyeing process for improved and milder dyeing of hair, especially human hair. The ready-to-use dyeing composition comprises carboxylic acids in addition to dyeing agents and oxidizing agents in order to improve dyeing efficiency with less loss of natural hair properties.

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