Hairdye preparation
US7166136B2 · kind B2 · utility
0Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2002 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jan 13, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hair dye composition comprising a component (A), which is a specified long-chain acyl sulfonic acid salt anionic surfactant, in an amount of 0.1 to 10.0 wt. %; a component (B), which is an aliphatic alcohol, in an amount of 0.25 to 25.0 wt. %; and a component (C), which is an acid dye and/or a natural dyestuff. The hair dye composition is stable even in a strongly acidic region (pH 1.5 to 4.5) where it exerts a dyeing effect. It has an appropriate viscosity and provides excellent sensation upon use. Furthermore, the composition can be easily rinsed off after use thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.