Coloring composition for keratin fibres comprising a system limiting the transcutaneous passage of an oxidation dye
US7077871B2 · kind B2 · utility
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4References
48Claims
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Key dates
| Filing date | Apr 9, 2003 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Nov 11, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/492
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Described is a method of reducing transcutaneous passage of an orthodiphenol oxidation dye by adding a catalytic system of Mn(II) or Zn(II) salt or oxide and at least one alkaline or alkaline earth hydrogenocarbonate to the orthodiphenol oxidation dye composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.