The present invention relates to an external composition for hair growth containing a compound represented by the formula (1), such as eliminating the crispness of hair, imparting smoothness and moistness to hair, and suppressing damage to hair. The composition for external use for hair growth excellent in durability of the hair is provided. (A) at least one selected from the group consisting of a compound represented by formula (1), (b) a nonionic surfactant, (c) a magnesium compound and a calcium compound, (d) water The composition for external use for hair growth characterized by including these.本発明は、式（１）で表される化合物を含有する発毛用外用組成物に関して、毛髪のぱさつき感をなくし、毛髪になめらかさ、しっとり感を付与し、毛髪の損傷を抑える等の効果の持続性に優れた発毛用外用組成物を提供する。 【化１】 （ａ）式（１）で表される化合物、（ｂ）非イオン性界面活性剤、（ｃ）マグネシウム化合物及びカルシウム化合物よりなる群から選択される少なくとも１種、（ｄ）水、を含むことを特徴とする発毛用外用組成物。
