Hair colouring method
US9345658B2 · kind B2 · utility
1Cited by
6References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2014 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Aug 21, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/884
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Method for coloring hair wherein a first and a second hair coloring composition are applied to the hair, wherein the concentration of the oxidative dye precursors and the concentration of the alkalizing agents and the concentration of the oxidizing agents comprised in the second hair coloring composition is lower than in the first hair coloring composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.