PROBLEM TO BE SOLVED: To provide an ultraviolet screening agent for cosmetics, which is excellent in dispersibility and storage stability while maintaining high transparency and an excellent ultraviolet screening effect, and gives cosmetics having improved feeling to the skin when blended in the cosmetics.SOLUTION: The ultraviolet screening agent for cosmetics includes polymer-coated metal oxide fine particles produced by coating, with silica as a first layer, the surface of each of at least one kind of metal oxide fine particles selected from the group consisting of zinc oxide fine particles, titanium oxide fine particles, cerium oxide fine particles, zirconium oxide fine particles, and iron oxide fine particles, a primary particle diameter of which fine particles is not smaller than 1 nm and not greater than 100 nm, and coating the outside of the first layer with a polymer as a second layer. Cosmetics using the ultraviolet screening agent are also provided.COPYRIGHT: (C)2009,JPO&INPIT【課題】高い透明性と優れた紫外線遮断能を維持しながら、分散性および貯蔵安定性に優れると共に、化粧料に配合した場合に、肌に対する感触が向上した化粧料を与える化粧料用紫外線カット剤およびそれを用いた化粧料を提供すること。【解決手段】一次粒子径が1nm以上、100nm以下である酸化亜鉛微粒子、酸化チタン微粒子、酸化セリウム微粒子、酸化ジルコニウム微粒子および酸化鉄微粒子よりなる群から選択される少なくとも1種の金属酸化物微粒子の表面を第1層としてシリカで被覆し、かつその外側を第2層としてポリマーで被覆してなるポリマー被覆金属酸化物微粒子を含有することを特徴とする化粧料用紫外線カット剤およびそれを用いた化粧料。【選択図】なし
