PROBLEM TO BE SOLVED: To solve the problems that conventional cosmetic products and quasi-drugs have effects on epidermal cells and stratum corneum as well as serve as a nutritional supplementation, while being poor in view of improving diversity of epidermal microorganisms (so-called prebiotics), and that they can achieve the improvement in the health of the skin, while being poor in direct working against the improvement of the health of epidermis microorganisms.SOLUTION: We developed a cosmetic for preparing the environment of healthier skin surface by newly adding a prebiotic view point to cosmetics to deliver a nutritional component suitable for not only skin cells but indigenous bacteria in a suitable balance. Cosmetics and quasi drugs containing a particular nutritional component in a particular balance in order to increase propionic acid bacteria particularly of epidermis of the face are provided.SELECTED DRAWING: NoneCOPYRIGHT: (C)2019,JPO&INPIT【課題】従来の化粧品、医薬部外品には、表皮細胞や角質層に対する効果、栄養補給の観点はあるものの、表皮微生物の多様性向上(いわゆるプレバイオティクス)としての観点に乏しく、皮膚細胞の健全化は図ることができるものの、表皮微生物の健全化に対する直接的な働き方に乏しかった。【解決手段】化粧品に、あらたにプレバイオティクスの観点を加え、肌細胞だけではなく、常在菌にとって適切な栄養成分を適切なバランスで届けることによって、より健全な肌表面の環境を整える化粧品を開発した。特に顔表皮のプロピオン酸菌の増加を目的として、特定の栄養成分を特定のバランスで含有する化粧品や医薬部外品を提供する。【選択図】なし