Hair dyeing process using a composition comprising at least one indole or indoline compound, a metal salt, hydrogen peroxide and a basifying agent
US8597373B2 · kind B2 · utility
1Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Jun 13, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/4324
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a process for dyeing keratin fibers, in which said fibers are treated: ▪ with a composition (A) comprising i) one or more indole or indoline compounds; ii) one or more metal salts; iii) hydrogen peroxide or one or more systems that generate hydrogen peroxide; and then ▪ with a composition (B) comprising iv) one or more basifying agents. The invention also relates to a hair dyeing process for obtaining better colorations, which are more uniform, chromatic and remanent and which do not impair the cosmetic properties of keratin fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.