PROBLEM TO BE SOLVED: To provide an oral photoaging inhibitor which is effective as an inhibitor of formation of wrinkles induced by ultraviolet rays.SOLUTION: This oral photoaging inhibitor contains hyaluronic acid or a pharmaceutically acceptable salt thereof as an effective ingredient, and is used as an inhibitor of formation of wrinkles induced by ultraviolet rays.COPYRIGHT: (C)2013,JPO&INPIT【課題】経口用光老化抑制剤を提供する。【解決手段】ヒアルロン酸またはその薬学的に許容される塩を有効成分として含有する経口用光老化抑制剤。【選択図】図1