Hair colorant compositions comprising 3-amino-2,6-dimethylphenol and 4-aminophenol-type developers, methods, and kits comprising the compositions
US8617256B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Mar 27, 2013 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Mar 27, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/882
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hair colorant composition comprises 3-amino-2,6-dimethylphenol in combination with a second dye coupler selected from the group consisting of 2,6-dihydroxyethylaminotoluene, 2,6-diaminopyridine and a developer selected from the group consisting of 4-aminophenol, 4-amino-3-methylphenol, 4-(methylamino)phenol. A kit for coloring hair comprises the hair colorant composition. A method of treating hair comprises applying the hair colorant composition to hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.