Problem to be solved: SCF synthesis inhibitory effect, female hormone like action effect, protein denaturation effect, stabilization effect of ASCO acid acid or its derivative, and new effective ingredient derived from natural product having melanin degradation effect.Solution: a plant or an extract of the family scallops is used as an effective ingredient for an external skin preparation agent, hair growth agent or oral composition. An external skin agent containing the composition.No selection【課題】皮膚外用剤、育毛剤及び経口用組成物に配合可能であって、SCF合成抑制効果、女性ホルモン様作用効果、タンパク質変性抑制効果、アスコルビン酸又はその誘導体の安定化効果、メラニン分解効果を有する天然物由来の新規有効成分の提供。【解決手段】シソ科ムラサキシキブ属の植物又はその抽出物を有効成分として皮膚外用剤、育毛剤又は経口用組成物。前記組成物を含有する皮膚用外用剤。【選択図】なし