Problem to be solved: to provide an antibacterial peptide expression promoter derived from human skin.Solution: an antibacterial peptide expression promoter derived from human skin using malonnian extract as an active ingredient.No selection【課題】ヒト皮膚由来の抗菌ペプチド発現促進剤を提供する。【解決手段】マロニエ抽出物を有効成分とするヒト皮膚由来の抗菌ペプチド発現促進剤。【選択図】なし