Aqueous-based hair dyeing composition containing a soluble bismuth salt and a reducing compound
US4195972A · kind A · utility
8Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1978 |
| Grant date | Apr 1, 1980 |
| Priority date | — |
| Expiry date | Oct 20, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hair dyeing composition comprising a metal salt and a sulfur-containing reducing compound is described. In the composition, the metal salt is a water-soluble bismuth salt of an alpha-hydroxy, mono-carboxylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.