| 摘要 |
PROBLEM TO BE SOLVED: To provide a skin care external preparation that has excellent promotion effect on production of extracellular matrix, concretely, collagen and hyaluronic acid, and is effective for preventing and improving age-related wrinkles and flabbiness. SOLUTION: The skin care external preparation comprises a fatty acid that is a 5-24C ketol fatty acid having one to six double bonds between carbon atoms, and has anαketol structure orγketol structure, or its derivative as an active ingredient. COPYRIGHT: (C)2011,JPO&INPIT
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