PROBLEM TO BE SOLVED: To provide a composition for external application having high ultraviolet-protective effects which is improved in temporal stability in a composition containing plenty of metal oxides having a small average particle diameter.SOLUTION: There is provided a composition for external application which comprises a component (A): a metal oxide powder having an average particle diameter of less than 100 nm, a component (B): a copolymer having at least acryloyl dimethyltaurine sodium and sodium acrylate or hydroxyethyl acrylate as constitutional units and a component (C): a polyether-modified silicone in which a polyether chain is bonded to a site other than trimethylsiloxane at the end of a linear silicone chain.SELECTED DRAWING: None【課題】粒子の平均粒子径が小さい金属酸化物を多く含有する組成物における経時安定性を改善した紫外線防御効果の高い外用組成物を提供する。【解決手段】(A)成分:平均粒子径が100nm未満である金属酸化物の粉体、(B)成分:少なくとも、アクリロイルジメチルタウリンナトリウムとアクリル酸ナトリウム若しくはアクリル酸ヒドロキシエチルおよびを構成単位として有するコポリマー、並びに(C)成分:直鎖型のシリコーン鎖の末端のトリメチルシロキサン以外の部位にポリエーテル鎖が結合したポリエーテル変性シリコーンを含む、外用組成物。【選択図】なし