Hair treatment methods
US9364403B2 · kind B2 · utility
0Cited by
8References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 22, 2013 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Mar 22, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/884
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A coloring composition comprising: (i) at least 0.0001 wt % of a water-soluble dye compound containing one or more sulfonate and/or carboxylate groups; (ii) at least 0.1 wt % urea; (iii) from 0.1 to 2.5 wt % of a thiol; (iv) less than 0.5 wt % ammonia; and (v) less than 0.5 wt % sulfite ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.