To provide a skin external preparation having a body hair growth inhibitory effect that has effectiveness and quality stability and also has excellent biological safety.SOLUTION: A skin external preparation for inhibiting body hair growth contains a soybean hydrolysate, and a Lactobacillus fermented hibiscus, as active ingredients. The soybean hydrolysate is prepared by performing enzymatic hydrolysis treatment when preparing an extract by solvent extraction of a soybean or after the extraction. The Lactobacillus fermented hibiscus uses, as a source of fermentation, a hibiscus itself (a "plant body"), or an extract obtained from the plant body by solvent extraction.SELECTED DRAWING: None【課題】有効性と品質安定性、さらには生体安全性にすぐれた体毛成長抑制効果を有する皮膚外用剤の提供。【解決手段】大豆を溶媒で抽出して抽出物を調製する際もしくは抽出後に、酵素による加水分解処理を行うことによって調製した大豆の加水分解物と、発酵の資化源としてハイビスカスそれ自体（以下、植物体という）、又は植物体から溶媒抽出方法により得られる抽出物を用いるハイビスカスの乳酸菌発酵物とを有効成分として含有する体毛成長抑制用皮膚外用剤。【選択図】なし
