The purpose of the present invention is to provide an oil-in-water emulsified sunblock cosmetic exhibiting an excellent feeling when used and capable of maintaining a high ultraviolet-ray protective effect even upon contact with water or sweat after application. The present invention pertains to an oil-in-water emulsified sunblock cosmetic containing an (A) ultraviolet-ray protective agent and a (B) fatty acid forming a solid at room temperature, the oil-in-water emulsified sunblock cosmetic being characterized in that 51% or less of the fatty acid is neutralized, and the formulation ratio ((A)/(B)) of the (A) ultraviolet-ray protective agent to the (B) fatty acid is in the range of at least 0.1 and less than 10.0. This cosmetic exhibits the unprecedented property of contact with water causing an improvement to the ultraviolet-ray protective ability thereof. It is preferable for the cosmetic to also contain an (C) oily component having an IOB of 0.5 or higher.本發明之目的在於提供一種水中油型乳化防曬化妝料,其於塗佈後與水或汗接觸之情形時,亦維持高紫外線防禦效果,且使用觸感優異。本發明係關於一種水中油型乳化防曬化妝料,其特徵在於:其含有(A)紫外線防禦劑及(B)於常溫下為固形之脂肪酸,上述脂肪酸之中和率為51%以下,且(A)紫外線防禦劑與(B)脂肪酸之調配量比率((A)/(B))為0.1以上且未達10.0之範圍內。上述化妝料發揮藉由與水接觸而紫外線防禦能力提高之先前未有之特性。該化妝料較佳為進而含有(C)IOB為0.5以上之油分。
