The present invention relates to R-N1-spermidine represented by formula (I), or 1,4-butanediamine, N- (3-aminopropyl) -N1-R, (I) H2N- (CH2) 3-N1. Induce melanin production in hair in the form of (R)-(CH2) 4-NH2, as is or in the form of pharmaceutically acceptable derivatives thereof, and promote pigmentation, particularly pigmentation on the hair shaft As an active ingredient for use in a cosmetic composition designed for the purpose, and as an active ingredient for topical administration, the compound represented by formula (I) is acceptable as a pharmaceutical in its form or as a salt. It relates to a cosmetic composition suitable for carrying out the above-mentioned pigmentation effect, which is contained in the form of a derivative. [Selection] Figure 1本発明は、式(I)で表されるR-N1-スペルミジン、又は1,4-ブタンジアミン、N-(3-アミノプロピル)-N1-R、(I) H2N-(CH2)3-N1(R)-(CH2)4-NH2の、そのままの形態又はそれらの医薬として許容される誘導体の形態での、毛髪におけるメラニン生成を誘導し、色素沈着、特に毛茎への色素沈着を促進するために設計された化粧料組成物の有効成分等としての使用、及び局所投与のための活性成分として、式(I)で表される化合物を、そのままの形態又は塩等の医薬として許容される誘導体の形態で含んでいる、上述の色素沈着効果を実行するために好適な化粧料組成物に関する。【選択図】図1