PROBLEM TO BE SOLVED: To provide a hair grower composition having a higher hair-growing effect than conventional hair grower compositions that contain a 5-aminolevulinic acid, a 5-aminolevulinic acid salt or derivatives thereof, and an iron complex or iron salt.SOLUTION: The hair grower composition contains (A) one or more selected from 5-aminolevulinic acid, a 5-aminolevulinic acid salt, and derivatives thereof, (B) one or more selected from an iron complex and an iron salt, (C) a plant extract that has vasodilating action, and (D) a vitamin B derivative.