Acidic post-treatment of hair dyed with dihydroxyindole
US5665336A · kind A · utility
2Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1995 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Aug 21, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for altering the color of hair that has been dyed with dihydroxyindole comprising the steps of treating the dyed hair with an acidic solution for an effective amount of time and rinsing the treated hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.