Process for one-step colouring and straightening hair
US10874185B2 · kind B2 · utility
0Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2014 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | May 9, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/882
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a method which achieves a simultaneous coulouring and straightening of the hair in a single step, utilizing a hair treatment composition comprising at least one carboxylic acid of formula (I) defined below and at least one direct dye: R—CO—COOH Formula (I)In another aspect, the invention is directed to the hair treatment composition and the use thereof for straightening and colouring the hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.