Patent · US Active

Process for treating hair

US11103429B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

KAO GERMANY GMBH · DE

Inventors

Bernd Nöcker · Darmstadt, DE
Steven Breakspear · Darmstadt, DE
Peter Bauer · Ludwigshafen, DE
Manfred Durr · Bad Sobernheim, DE

Key dates

Filing date	Mar 15, 2016
Grant date	Aug 31, 2021
Priority date	—
Expiry date	Jan 18, 2037

Classification

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

Abstract

The present invention relates to a process for permanent shaping and dyeing carried out one after another with compositions providing improved and milder shaping and dyeing of hair, especially human hair. The inventors of the present invention have unexpectedly found out that when commonly used permanent shaping and dyeing compositions are mixed with another composition comprising predominantly carboxylic acids, the permanent shaping and dyeing effects of the compositions are improved, homogeneous permanent shaping and dyeing of hair fibers is achieved and natural cosmetic properties of hair are maintained.

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