Aqueous-based hair dyeing composition containing a soluble bismuth salt complex and a reducing compound
US4306873A · kind A · utility
4Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1979 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Oct 30, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/58
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hair dyeing composition comprising a water-soluble metal salt complex and a sulfur-containing reducing compound is described. In the composition, the metal salt complex is a water-insoluble bismuth salt of an alpha-hydroxy, polycarboxylic acid with a nitrogen-containing solubilizing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.