Method for evaluating state of horny layer and method for evaluating horny layer improvement effect of cosmetic preparation
US9970848B2 · kind B2 · utility
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9Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 21, 2014 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Feb 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/302
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to providing a method for more conveniently evaluating stratum corneum condition. A stratum corneum sheet is contacted with a solution of a water-soluble dye, and the staining intensity or fluorescence intensity is measured to allow convenient evaluation of the stratum corneum condition. There is further provided a method for evaluating the ameliorating effect of a cosmetic or cosmetic treatment on the stratum corneum, by implementing the method for evaluating stratum corneum condition using a water-soluble dye according to the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.