A hair growth promotor which is an ethanol or aqueous ethanol preparation comprising, as active ingredients for a hair growth promotor, (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: ##STR00001## in Formula (I), R.sub.1 and R.sub.2 are defined. The hair growth promotor can have an excellent hair growth effect and can provide an excellent stabilization effect at low temperature and can provide good feeling having no stickiness.