| abstract |
The present invention provides a ceramide synthesis accelerator excellent in preventing or improving rough skin and dry skin, and a composition containing the same. The compound represented by the chemical formula (1) and / or a salt thereof is excellent in ceramide synthesis promoting effect (wherein R 1 and R 2 are hydrogen, alkyl group, aryl group, acyl group, respectively). , Selected from ethylene acetate). Moreover, the composition which mix | blends these compounds is safe, rough skin, and is excellent in the prevention or improvement effect of dry skin. [Selection figure] None |