Use of ascorbic acid in permanent waving and hair coloring compositions
US6428580B2 · kind B2 · utility
3Cited by
16References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1997 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Aug 20, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/676
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A novel oxidizing system comprising ascorbic acid, at least one metal ion and an oxidizing agent capable of generating an oxidizing potential of from about 100 to about 500 millivolts at a pH ranging from about 2 to about 10. The oxidizing system can be used in quenching or neutralizing permanent wave processes and in developing oxidative hair color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.