PURPOSE: An external use composition containing complex extract of Eclipta prostrata L., Thuja orientalis L., and Pinellia ternata Breitenbach is provide dto suppress 5 alpha-reductase and to prevent alopecia. CONSTITUTION: An external use composition for preventing alopecia and promoting hair growth contains 0.01-10 wt% of complex extract of Eclipta prostrata L., Thuja orientalis L., Gleditsia japonica Miquel var. koraiensis Nakai, Chamaecyparis obtuse, and Pinellia ternata Breitenbach as an active ingredient. The extract is prepared using purified water, methanol, ethanol, propanol, butanol, ethyl acetate, glycerin, propylene glycol, or butylenes glycol. The external use composition is manufactured in the form of a hair tonic, hair conditioner, hair essence, hair lotion, hair shampoo, hair rinse, hair treatment, hair wax, hair pack, hair sop, hair mousse, or hair spray. [Reference numerals] (AA) Manufacturing example 1； (BB) Manufacturing example 2； (CC) Manufacturing example 3； (DD) Manufacturing example 4； (EE) Manufacturing example 5본 발명은 한련초, 측백엽, 조협, 편백, 영지버섯 및 반하의 복합추출물을 유효성분으로 함유하는 육모촉진 및 탈모예방 개선용 외용제조성물에 관한 것으로, 상기 생약복합추출물은 장기간 피부에 사용하는 경우에도 안전하며, 특히 5알파-환원효소(5α-reductase) 억제효과가 우수하여 육모촉진 및 탈모예방 개선용 외용제조성물로 유용하게 사용될 수 있다.
