Method of treating keratinic fibers such as a mammalian hair with a combination of chemicals and electromagnetic radiation
US5858179A · kind A · utility
16Cited by
1References
16Claims
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Inventor
Key dates
| Filing date | Sep 25, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Sep 25, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/81
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A combination of chemicals and electromagnetic radiation is used to alter the physical characteristics of keratinic fibers such as mammalian or human hair. A non-irritating, non-reactive disulfide in the form of a solution or gel is first contacted with the hair. Electromagnetic radiation is then applied to the hair to photochemically convert the disulfide into a dithiol. The dithiol breaks the disulfide bonds in the hair so that the hair can be permanently re-shaped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.