Provided is a hair growth promoter which has an excellent hair growth effect and provides an excellent stabilization effect at low temperature and which provides good use feeling having no stickiness. The hair growth promoter is an ethanol or aqueous ethanol preparation comprising, as active ingredients for a hair growth promoter, (A) at least one compound selected from fatty acids having a chain length of an odd number of carbon atoms, the derivatives of the fatty acids, aliphatic alcohols having a chain length of an odd number of carbon atoms and the derivatives of the aliphatic alcohols and (B) at least one selected from 6-benzylaminopurine and/or the derivatives thereof represented by the following Formula (I), wherein it further comprises (C) at least one of polyglycerin fatty acid esters and (D) at least one of sorbitan fatty acid esters: in Formula (I), R 1 is an alkyl group having 1 to 22 carbon atoms, a cyclic hydrocarbon group, an alkenyl group having 1 to 22 carbon atoms, an aralkyl group which is non-substituted or has a substituent, a styryl group which is non-substituted or has a substituent, an alkylamino group, an amino group having a cyclic hydrocarbon group, an alkenylamino group, a benzylamino group which is non-substituted or has a substituent, a phenylethylamino group which is non-substituted or has a substituent, a phenylamino group which is non-substituted or has a substituent, a phenylaminocarbonylamino group which is non-substituted or has a substituent, a pyridylamino group, a pyridylmethylamino group, a pyrrolylmethylamino group, an oxazolylmethylamino group, an imidazolylmethylamino group, a pyridazolylmethylamino group, a naphthylamino group or a naphthylmethylamino group, and R 2 is a hydrogen atom, a pentose or hexose.본 발명에 의하면, 우수한 모발 성장 효과를 지니는 동시에 우수한 저온에서의 우수한 안정화 효과를 지니며, 또한 끈적거림이 없는 양호한 사용감을 제공하는 모발 성장촉진제 조성물이 제공된다.상기 모발성장촉진제 조성물은, (A) 홀수개의 탄소 원자의 사슬 길이를 지닌 지방산, 상기 지방산의 유도체, 홀수개의 탄소 원자의 사슬 길이를 지닌 지방족 알코올 및 상기 지방족 알코올의 유도
