To provide a safe skin preparation for external use for hair growth which can be used regardless of gender and has an excellent hair growth effect. This skin preparation for external use for hair growth is characterized by containing at least one of Quillaja saponin and a steroid saponin as an active ingredient. Preferably, the steroid saponin is at least one selected from the group consisting of Sarsasaponin, Timosaponin, Digitalis saponin, Dioscorea japonica saponin, and Ophiopogon saponin. More preferably, the steroid saponin is Sarsasaponin.本發明課題為提供一種無論男女皆可利用，生髮效果優異而且安全的生髮用皮膚外用劑。 課題解決手段為一種生髮用皮膚外用劑，其特徵為：含有皂樹皂苷及甾體皂苷類之中的至少1種作為有效成分。前述甾體皂苷類係以選自菝葜皂苷、知母皂苷、毛地黃皂苷、薯蕷皂苷及麥門冬皂苷所構成的群中的至少1種為佳。另外，前述甾體皂苷類係以菝葜皂苷為較佳，若併用皂樹皂苷與菝葜皂苷，則可發揮出更顯著的生髮效果。
