| 摘要 |
To provide an external-use composition which exhibits excellent effect of improving decrease in turnover rate of the keratinous layer caused by aging; more specifically, retarding skin aging as well as preventing unfavorable skin conditions of various types such as spots, dull appearance, wrinkles, and skin-roughening. The external-use composition contains a propanediol derivative represented by formula (I): (wherein R represents a hydrogen atom, a methyl group, or an ethyl group) or a pharmaceutically acceptable salt thereof.
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