Provided is an oil-in-water type emulsified sunscreen cosmetic which contains (a) 0.1 to 5.0 mass % of an organosiloxane derivative represented by general formula (1) (in the formula, at least one of R1 to R3 is a functional group represented by -O-Si(R4)3 (R4 is an alkyl group having 1 to 6 carbon atoms or a phenyl group), and the remaining R1 to R3 groups may be the same or different and are substituted or unsubstituted monovalent hydrocarbon groups, M is a hydrogen atom, a metal atom or an organic cation, and A is a straight chain or branched chain alkylene group represented by CqH2q, wherein q is an integer of 0 to 20), (b) 0.1 to 5.0 mass % of poly(ethylene glycol) stearate, (c) 10.0 to 25.0 mass % of an ultraviolet radiation absorber and (d) a higher alcohol. The oil-in-water type emulsified sunscreen cosmetic undergoes little change in viscosity even if a large quantity of an ultraviolet radiation absorber is blended in the cosmetic and even when stored for long periods at low or high temperatures, spreads and absorbs well when applied to the skin, does not cause stickiness following application and has a refreshing feel.本發明提供一種水中油型乳化防曬化妝料，其儘管高調配量地調配有紫外線吸收劑，但即便於低溫(0℃)及高溫(50℃)下長時間保管黏度變化亦較小，並且塗抹於皮膚上時延展性或親和性良好，塗抹後不黏膩而具有清爽之觸感。本發明之水中油型乳化防曬化妝料之特徵在於：含有(a)有機矽氧烷衍生物0.1~5.0質量%、(b)聚乙二醇硬脂酸酯0.1~5.0質量%、(c)紫外線吸收劑10.0~25.0質量%、及(d)高級醇；且上述(a)有機矽氧烷衍生物係以下述通式(1)表示：(式中，R1~R3之至少一個為以-O-Si(R4)3表示之官能基(R4為碳數1~6之烷基或苯基之任一者)，其他R1~R3為可相同或亦可不同之經取代或未經取代之一價烴基，M為氫原子、金屬原子或有機陽離子，且A為以CqH2q表示之直鏈狀或支鏈狀之伸烷基，此處，q為0~20之整數)。
