Dyestuff composition for the gradual dyeing of hair by atmospheric oxidation and process using the same
US5350424A · kind A · utility
6Cited by
21References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1992 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Oct 13, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/411
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dyestuff composition for gradually dyeing hair by atmospheric oxidation wherein the dyestuff composition contains a dye component which becomes entrapped in hair fibers when the dyestuff composition is removed from the hair and which results in the gradual development of color in the hair due to atmospheric oxidation of the entrapped dye component. Also provided is a process of employing the dyestuff composition of this invention to gradually dye hair, the dyestuff composition being removed from the hair approximately 5 minutes after its application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.