Provided are: a mesenchymal-stem-cell induction agent； and an aging-factor production inhibitor, an aging improvement agent, and a dermal regeneration promoter that contain said induction agent. The mesenchymal-stem-cell induction agent was invented as a result of discovering mesenchymal-stem-cell induction actions exhibited by an iris extract, an olive-leaf extract, and a chamomile extract. In addition, the aging-factor production inhibitor, the aging improvement agent, and the dermal regeneration promoter that contain said induction agent were invented as a result of discovering the effects of the mesenchymal stem cells that inhibits aging-factor production and that also activate the dermal fibroblasts.本發明提供一種間葉系幹細胞之引誘劑、以及含有該引誘劑之老化因子產生抑制劑、老化改善劑及真皮之再生促進劑。 藉由發現鳶尾萃取物、橄欖葉萃取物、及洋甘菊萃取物具有間葉系幹細胞引誘作用，而達成間葉系幹細胞之引誘劑之發明。又，藉由發現間葉系幹細胞抑制老化因子之產生，且使真皮纖維芽細胞活化，而達成含有該引誘劑之老化因子產生抑制劑、老化改善劑、及真皮之再生促進劑相關之發明。
