Aqueous progressive hair colorant having soluble sulfur source and amphoteric surfactant
US5192333A · kind A · utility
2Cited by
18References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1992 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | Feb 12, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A clear, aqueous, shelf-stable progressive hair coloring composition includes a salt of a metal, a soluble source of sulfur, an amphoteric surfactant and a pH controller that controls the pH of the composition to be within the range of about 7.5 to about 11.0. Preferred metallic salts are salts of lead or bismuth and the preferred sulfur source is sodium thiosufate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.