Abstract

In the process of development of cosmetic liquids, it is required to evaluate a penetration depth and speed into the skin. A tape stripping method(1) is conventionally used to evaluate penetration of the cosmetic liquids. However, the tape stripping method requires florescent dyes to measure the penetration depth. Also, the tape stripping method cannot evaluate the penetration speed because it is destructive evaluation method.

© 2019 Japan Society of Applied Physics, The Optical Society (OSA)

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