This invention offers the medicine and the functional food which possess thing, and skin aging control action, collagen production promotion action and the skin cell multiplication promotion action which offer peptide and the composition which are suited for skin aging control action, collagen production promotion action, epidermal turn over promotion action and the ingestion which possesses the skin cell multiplication effect. The composition which includes at least one of peptide, Asn-Ile-Pro-Pro-Leu, Ile-Pro-Pro-Leu, Ile-Pro-Pro, Pro-Val-Val-Val-Pro-Pro, Val-Pro-Pro-Phe, Val-Pro-Pro, Phe-Pro-Pro-Gln and Leu-Pro-Pro-Thr due to this invention is offered.本発明は皮膚老化抑制作用、コラーゲン産生促進作用、表皮ターンオーバー促進作用および皮膚細胞増殖効果を有する経口摂取に適したペプチドおよび組成物を提供すること、および、皮膚老化抑制作用、コラーゲン産生促進作用および皮膚細胞増殖促進作用を有する医薬および機能性食品を提供する。本発明によりペプチド、Asn-Ile-Pro-Pro-Leu、Ile-Pro-Pro-Leu、Ile-Pro-Pro、Pro-Val-Val-Val-Pro-Pro、Val-Pro-Pro-Phe、Val-Pro-Pro、Phe-Pro-Pro-Gln、Leu-Pro-Pro-Thrの少なくとも一つを含む組成物が提供される。
