The present invention intends to provide a skin collagen production promotor having no problems in the safety. Besides, the present invention also intends to provide the food and drink, and cosmetics for promoting skin collagen production which compounds such promotor. TGF-β and/or its decomposition product which is obtained by decomposing TGF-β with protease, such as pepsin or pancreatin, are used as effective components for the skin collagen production promotor, the food and drink for promoting skin collagen production and the cosmetics for promoting skin collagen production. TGF-β and its decomposition product can work to increase the amount of collagen in skin.本發明的目的在於提供一種於安全性方面沒有問題的皮膚膠原蛋白產生促進劑。又，本發明的目的在於提供一種摻合如前述的物質之皮膚膠原蛋白產生促進用飲食品及皮膚膠原蛋白產生促進用化妝品。本發明將TGF-β及/或將TGF-β以胃蛋白酶或胰酶(pancreatin)等之蛋白質分解酵素分解而得到的TGF-β分解物作為皮膚膠原蛋白產生促進劑、皮膚膠原蛋白產生促進用飲食品及皮膚膠原蛋白產生促進用化妝品的有效成分。該TGF-β或TGF-β分解物有使皮膚的膠原蛋白量增加的作用。
