Agents and method for producing semi-permanent colorations of keratin fibers
US6361571B1 · kind B1 · utility
32Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2000 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Jan 4, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/494
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The object of the present invention is a colorant for the semi-permanent tinting of keratin fibers, said colorant being based on a combination of nonoxidative dyes and polymethine dyes of the tautomeric formula (Ia)/(Ib) and a method for tinting keratin fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.