PROBLEM TO BE SOLVED: To provide an oil-in-water emulsified cosmetic which has both water resistance and washability and is excellent in usability and ultraviolet protection effect. SOLUTION: One or more selected from (Component A) a hydrophobic ultraviolet protective agent, (Component B) a water-holding paste oil, (Component C) 2-acrylamide-2-methylpropanesulfonic acid, and a derivative thereof. An oil-in-water emulsified cosmetic containing one or more selected from homopolymers, copolymers, and crosspolymers as a constituent unit. [Selection diagram] Fig. 2【課題】耐水性と洗い流し性とを両立し、かつ、使用感と紫外線防御効果に優れた水中油型乳化化粧料の提供。【解決手段】（成分Ａ）疎水性紫外線防御剤から選ばれる１種または２種以上、（成分Ｂ）抱水性ペースト油、（成分Ｃ）２－アクリルアミド－２－メチルプロパンスルホン酸、およびその誘導体を構成単位として含む、ホモポリマー、コポリマー、クロスポリマーから選ばれる１種または２種以上、を含有する水中油型乳化化粧料。【選択図】図２
