Patent · US Active

Hair colouring methods and kits thereof

US9468278B2 · kind B2 · utility

0Cited by

11References

16Claims

0Family size

Assignee

The Procter & Gamble Company · US

Inventors

Christoph Hans Peter Bonauer · Frankfurt, DE
Graham John Myatt · Cincinnati, US
Nan Wang · Shanghai, CN

Key dates

Filing date	Aug 21, 2014
Grant date	Oct 18, 2016
Priority date	—
Expiry date	Aug 21, 2034

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61Q5/04
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Method for coloring hair wherein a first hair coloring composition is applied to the hair, e.g. the hair roots and a second hair coloring composition is applied to the hair, e.g. the hair lengths and tips, wherein the pH of the second hair coloring composition is lower than the pH of the first hair coloring composition.

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