Cosmetic reducing compositions for the permanent deformation of hair based on an ester of thioglycolic acid and an N-(C.sub.2 -C.sub.4) acyl cysteamine
US5225191A · kind A · utility
13Cited by
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16Claims
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Assignee
Inventor
Key dates
| Filing date | Jan 28, 1991 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Jan 28, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/46
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A cosmetic reducing composition for use in the permanent deformation of hair contains, as a reducing agent, a combination of an ester of thioglycolic acid and an N-(C.sub.2 -C.sub.4) acyl cysteamine, the pH of the composition being lower than 8. This composition is employed in a process for waving the hair or straightening the hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.