PURPOSE: A composition containing compounds for preventing alopecia and promoting hair growth is provided to save cost. CONSTITUTION: A composition for preventing alopecia or promting hair growth contains a compound of chemical formula I. In chemical formula I, R is C_2H_5 or C_2H_3. The composition is administered once or 12 times a day in a dose of 50ml to 500ml. The composition is taken by parenteral, topical, oral, rectal, or nasal administration. The composition is manufactured in the form of a topical application, hair lotion, hair cream, hair gel, hair rinse, or essence. The composition is applied on scalp.본 발명은 하기 화학식 I의 화합물을 함유하는 탈모 방지 또는 발모 촉진용 조성물에 관한 것이다:[화학식 I](식 중, 치환기 R은 C2H5 또는 C2H3임).
