Lotion for reduction of post permanent wave odors
US5441729A · kind A · utility
20Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Feb 14, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/222
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Post permanent wave hair odor is reduced by treating the hair fiber with an aqueous bicarbonate/carbonate salt solution and then with an acidic aqueous solution. After allowing sufficient time for this lotion to penetrate the fiber, the acidic aqueous solution is directly applied to the fiber so that a reaction with the bicarbonate/carbonate salts occurs. This reaction results in the formation of gaseous carbon dioxide. Evolution of this gas from deep within, as well as the surface, of the fiber serves to release any trapped volatile malodorous mercaptans and byproducts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.