PROBLEM TO BE SOLVED: To provide a new use of astaxanthin, for example, for reduction in an amount of water transpiration of skin, and suppression of decrease in moisture retention function.SOLUTION: An agent for reducing an amount of water transpiration of skin comprises astaxanthin as an active ingredient.COPYRIGHT: (C)2015,JPO&INPIT【課題】皮膚の水分蒸散量を低減させ、水分保持機能の低下を抑制するようなアスタキサンチンの新たな用途を提供する。【解決手段】アスタキサンチンを有効成分として含有する皮膚水分蒸散量低減剤。【選択図】なし