PROBLEM TO BE SOLVED: To provide an inhibitor of testosterone-5α-reductase activity excellent in safety and stability and a hair-growing agent excellent in hair-growing effects, sebum secretion inhibiting effects, and an effect of bringing a scalp to a healthy state, and excellent in both of use feeling such as nonstickiness after use and stability with time.SOLUTION: This inhibitor of testosterone-5α-reductase activity includes fruit juice of one or two or more kinds of family Rosaceae plants selected from apricot, peach, apple and strawberry, preferably further includes an extract of Ecklonia kurome of family Laminariaceae. The hair growing agent includes the inhibitor of testosterone-5α-reductase activity.COPYRIGHT: (C)2013,JPO&INPIT【課題】安全性、安定性に優れるテストステロン-5α-レダクターゼ活性阻害剤、および育毛効果、皮脂分泌抑制効果、頭皮を健康な状態へ導く効果に優れるとともに、使用後のべたつきが無い等の使用感、経時安定性のいずれにも優れる育毛剤の提供。【解決手段】本発明のテストステロン-5α-レダクターゼ活性阻害剤は、アンズ、モモ、リンゴおよびイチゴから選ばれる一種又は二種以上のバラ科植物の果汁を含有し、さらにコンブ科のクロメの抽出物を含有することが好ましい。本発明の育毛剤は、本発明のテストステロン-5α-レダクターゼ活性阻害剤を含有する。【選択図】なし
