Hair dyeing composition containing bismuth citrate, triethanolamine and sulfur
US3954393A · kind A · utility
6Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1973 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Aug 29, 1993 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition for dyeing hair comprising the product formed by contacting bismuth citrate, triethanolamine and sulfur in the presence of water. The product is stable in solution; in use the product is applied to human hair, as on the scalp, and thereupon effects a darkening of the hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.