Electrochemical method and system for dyeing hair
US6835210B1 · kind B1 · utility
12Cited by
6References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Nov 13, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S132/901
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for electrochemically dyeing hair is provided which includes first applying to the hair an oxidative dye precursor mixture containing a primary intermediate having a standard Redox potential that is less than about 1V. This precursor mixture on the hair is then contacted with an electrode system that has sufficient voltage to electrochemically oxidize the primary intermediate to produce a colored dye through a coupling reaction. A system or kit is described for carrying out the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.