PROBLEM TO BE SOLVED: To provide a mechanosensor activator, a collagen gel shrinkage promoter, a skin elasticity improving agent, a skin sagging preventing or improving agent, a skin tightening agent, a skin wrinkle preventing or improving agent, and a skin aging preventing or improving agent.SOLUTION: The invention provides a mechanosensor activator, a collagen gel shrinkage promoter, a skin elasticity improving agent, a skin sagging preventing or improving agent, a skin tightening agent, a skin wrinkle preventing or improving agent, and a skin aging preventing or improving agent which contain Herniaria glabra or extract thereof as an active ingredient.COPYRIGHT: (C)2015,JPO&INPIT【課題】メカノセンサー活性化剤、コラーゲンゲル収縮促進剤、皮膚弾力性改善剤、皮膚のタルミ予防又は改善剤、皮膚引き締め剤、皮膚のシワ予防又は改善剤、皮膚老化予防又は改善剤の提供。【解決手段】コゴメビユ又はその抽出物を有効成分とするメカノセンサー活性化剤、コラーゲンゲル収縮促進剤、皮膚弾力性改善剤、皮膚のタルミ予防又は改善剤、皮膚引き締め剤、皮膚のシワ予防又は改善剤、皮膚老化予防又は改善剤。【選択図】なし