[Object] In particular, a skin external preparation that achieves a desired effect by using a plant extract component having an antioxidant property, a keratinization / differentiation promoting property, an ECM production promoting property, and an anti-aging effect that can be a new active ingredient of a skin external preparation. I will provide a. SOLUTION: Extracts of cultured cells of Potentilla miyabei of the genus Rosaceae (Potentilla miyabei) or of the genus Ezonotichikogusa (Antennaria dioica) of the family Asteraceae are antioxidant, keratinization / differentiation promoting, and ECM production promoting The external preparation for skin contains 0.000001 to 20% by weight as an active ingredient for anti-aging. [Selection diagram] None【課題】特に皮膚外用剤の新規有効成分と成り得る抗酸化性、角化・分化促進性、ECM産生促進性、抗老化効果を有する植物抽出成分の利用を図り、所要効果を奏する皮膚外用剤を提供する。【解決手段】バラ科キジムシロ属のメアカンキンバイ（Potentilla miyabei）またはキク科エゾノチチコグサ属のエゾノチチコグサ（Antennaria dioica）の培養細胞の抽出物を、抗酸化性、角化・分化促進性、ECM産生促進性、抗老化の有効成分として０．０００００１～２０重量％含有する皮膚外用剤とする。【選択図】なし
