An oil-in-water external composition for skin contains 0.2% to 2.5% by weight of polyisobutene having a relative mass of 30,000 to 100,000. The external composition for skin is applied to the skin except lips.本發明的水中油型皮膚外用組成物係含有具30,000至100,000的相對質量的0.2質量%至2.5質量%的聚異丁烯。皮膚外用組成物係使用於唇以外的肌膚。