To discover an ingredient having anti-obesity action, a cyclic AMP phosphodiesterase activity inhibitory action, a dipeptidyl peptidase IV activity inhibitory action, anti-aging action, hair-growing action, antiandrogen action, skin-whitening action or anti-inflammatory action from compounds derived from a natural product and to provide an anti-obesity agent, a cyclic AMP phosphodiesterase activity inhibitor, a dipeptidyl peptidase IV activity inhibitor, an anti-aging agent, a hair-growing agent, an antiandrogen agent, a skin whitening agent or an anti-inflammatory agent, which uses the ingredient as an active ingredient.SOLUTION: Dihydroferulic acid is used as an active ingredient of an anti-obesity agent, a cyclic AMP phosphodiesterase activity inhibitor, a dipeptidyl peptidase IV activity inhibitor, an anti-aging agent, a hair-growing agent, an anti-androgen agent, a skin-whitening agent and an anti-inflammatory agent. Further, dihydroferulic acid is blended in a skin cosmetic, a hair cosmetic and a food or drink.SELECTED DRAWING: None【課題】天然物由来の化合物の中から抗肥満作用、サイクリックＡＭＰホスホジエステラーゼ活性阻害作用、ジペプチジルペプチダーゼＩＶ活性阻害作用、抗老化作用、育毛作用、抗男性ホルモン作用、美白作用、または抗炎症作用を有するものを見出し、それを有効成分とする抗肥満剤、サイクリックＡＭＰホスホジエステラーゼ活性阻害剤、ジペプチジルペプチダーゼＩＶ活性阻害剤、抗老化剤、育毛剤、抗男性ホルモン剤、美白剤、または抗炎症剤を提供する。【解決手段】本発明の抗肥満剤、サイクリックＡＭＰホスホジエステラーゼ活性阻害剤、ジペプチジルペプチダーゼＩＶ活性阻害剤、抗老化剤、育毛剤、抗男性ホルモン剤、美白剤、および抗炎症剤の有効成分として、ジヒドロフェルラ酸を用いる。また、本発明の皮膚化粧料、頭髪化粧料、および飲食品に、ジヒドロフェルラ酸を配合する。【選択図】なし
