PROBLEM TO BE SOLVED: To provide an external composition for skin comprising a skin-whitening component and a thickener, the composition inhibiting the coloring of the skin-whitening component due to oxygen, light and/or heat.SOLUTION: An external composition for skin comprises (A) a skin-whitening component, (B) a thickener, and (C) a compound having a hydantoin skeleton.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】酸素、光および/または熱による美白成分の着色が抑制された、美白成分と増粘剤を含有する皮膚外用組成物を提供すること。【解決手段】(A)美白成分、(B)増粘剤、および(C)ヒダントイン骨格を有する化合物を含有する皮膚外用組成物。【選択図】なし