PROBLEM TO BE SOLVED: To provide a cosmetic in which the decrease of the effect of an ultraviolet protective agent is suppressed and the SPF is further improved. Component (A): (a) one or more hydrophobic monomers selected from the group consisting of styrene and its derivatives, vinyl esters, and hydrophobic acrylic monomers, and (b) an ionic hydrophilic monomer or Including a structural unit derived from the salt, the mass ratio (a) / (b) of (a) and (b) is 99.5 / 0.5 to 80/20, and the insoluble fraction in tetrahydrofuran is 10 % Or more and 100% or less of ionic polymer particles, and component (B): a UV protectant, and a cosmetic in which the mass ratio of component (A) and component (B) is 5/95 to 30/70. . [Selection diagram] None【課題】紫外線防御剤の効果の低下を抑制し、SPFをより向上させた化粧料を提供する。【解決手段】成分(A): (a)スチレン及びその誘導体、ビニルエステル、並びに疎水性アクリル系モノマーからなる群から選ばれる1種以上の疎水性モノマー、及び (b)イオン性親水性モノマー又はその塩に由来する構成単位を含み、(a)と(b)の質量比(a)/(b)が99.5/0.5~80/20であり、テトラヒドロフランへの不溶分率が10%以上100%以下であるイオン性ポリマー粒子、及び 成分(B):紫外線防御剤を含有し、成分(A)と成分(B)との質量比が5/95~30/70である化粧料。【選択図】なし