Method of permanently restructuring curled or frizzy hair
US5520909A · kind A · utility
14Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Dec 6, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/46
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hair relaxant and process in which water-soluble disulfides are added to water-soluble mercaptans, used as reducing agents, to shift the equilibrium point of the relaxer toward the reactants sufficiently such that the relaxant will not cause damage to the hair. The ingredients are carried in a viscous creme base, and there is an absence of sulfite and bisulfite salts. This is followed by rinsing and the use of an oxidizing neutralizer. The process is carried out in the absence of added heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.