Cosmetic article and process for dry dyeing keratin materials
US7611545B2 · kind B2 · utility
7Cited by
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23Claims
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Assignee
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Key dates
| Filing date | Dec 14, 2007 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Feb 29, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/24
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure relates to a substantially dry cosmetic article for dyeing keratin materials, comprising a porous flexible substrate, and at least one direct dyes and/or direct dye precursor in powder form, which are capable of dyeing the keratin material via heat transfer, the substrate and the direct dyes or direct dye precursors being non-covalently bonded to the substrate. Disclosed herein is also a method for dyeing keratin materials, for example, human keratin materials, via dry heat transfer, using the dry heat-transfer cosmetic article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.