Patent · US Active

Liquid composition comprising hair direct dyes

US11179314B2 · kind B2 · utility

0Cited by

0References

14Claims

0Family size

Assignee

KAO GERMANY GMBH · DE

Inventors

Jonathan Wood · Sudbury, US
Anja Aechtner · Darmstadt, DE
Sandra Schmelz · Marktheidenfeld, DE
Frank Kufner · Darmstadt, DE

Key dates

Filing date	Nov 9, 2017
Grant date	Nov 23, 2021
Priority date	—
Expiry date	Oct 25, 2038

Classification

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

Abstract

The present invention relates to a stable liquid composition comprising hair direct dyes in a liquid diol which is used for dyeing hair after mixing with one or more other aqueous compositions. The compositions preferably comprise an alkalizing agent.

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