PROBLEM TO BE SOLVED: To provide a pimple prevention/improvement agent giving almost no skin irritation, allowing safe use for the pubescence, the young generation and week skin quality and even for hypersensitive skins such as allergic skin, and exhibiting effects enough for prevention, improvement and treatment of pimples and a skin external preparation composition used for prevention/improvement of pimples.SOLUTION: A pimple prevention/improvement agent and a skin external preparation composition are characterized by containing, as a component, a soybean extract, a rehmannia root extract, a western white willow bark extract, a phellodendron amurense extract, a neem extract, a houttuynia cordata extract, a scutellariae radix extract and a western pear fruit juice lactic acid bacterium fermentation liquid.COPYRIGHT: (C)2014,JPO&INPIT【課題】皮膚刺激性がほとんどなく、思春期、若年層、弱い肌質や、アレルギー等の敏感肌にも安全に使用することが可能であって、ニキビの予防や、改善又は治療に十分な効果を発揮するニキビ予防・改善剤と、ニキビ予防・改善する為に用いられる皮膚外用剤組成物を提供する。【解決手段】構成成分として、ダイズエキス、ジオウエキス、西洋シロヤナギ樹皮エキス、オウバクエキス、ニームエキス、ドクダミエキス、オウゴンエキス、および西洋梨果汁乳酸菌醗酵液を含有することを特徴とするニキビ予防・改善剤、皮膚外用剤組成物により構成する。【選択図】なし