Patent · US Active

Method for colouring keratin fibers

US10973747B2 · kind B2 · utility

0Cited by

0References

16Claims

0Family size

Assignee

KAO GERMANY GMBH · DE

Inventors

Bernd Nöcker · Darmstadt, DE
Anne Neu · Darmstadt, DE
Fariba Ghiasi · Darmstadt, DE

Key dates

Filing date	Dec 21, 2017
Grant date	Apr 13, 2021
Priority date	—
Expiry date	Jan 5, 2038

Classification

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

Abstract

The present invention relates to a method of coloring keratin fibers, especially human hair, which delivers intensive, long lasting, brilliant colors and provides improved grey coverage. Kit therefore is disclosed as well. The method of colouring hair involves treating hair prior to colouring with an alkaline reducing agent.

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