Provided is an emulsified cosmetic composition having an excellent UV-protective effect, an excellent transparent feeling, an excellent feeling upon application, and an excellent long-term stability. The emulsified cosmetic composition is characterized by containing a powder which is produced by subjecting a zinc oxide powder (A) having an average particle diameter of 0.1 to 1 µm, an average particle thickness of 0.01 to 0.2 µm, and an average aspect ratio of 3 or more to surface treatment with a silane or silazane compound having a C 1-20 alkyl or fluoroalkyl group and having reactivity with an inorganic oxide.本發明提供一種紫外線防禦效果、透明感、使用感及經時穩定性優異之乳化化粧料。本發明之乳化化粧料之特徵在於含有：(A)藉由具有碳數1~20之烷基或氟烷基、且與無機氧化物具有反應性之矽烷化合物或矽氮烷化合物對平均粒徑為0.1~1 μm、平均粒子厚度為0.01~0.2 μm及平均板狀比為3以上之氧化鋅粉末加以表面處理而成之粉末。
