Disclosed is a make-up cosmetic, preferably a lip cosmetic, an eyelash cosmetic or an eye liner cosmetic, which contains an acrylic copolymer having a cycloalkyl group, has excellent gloss, adherability and water resistance, and also has superior long-lasting performance upon application. The acrylic copolymer having a cycloalkyl group is produced by polymerizing monomers comprising a component (a1) and a component (a2) and/or a component (a3), wherein the component (a1) is an acrylate or methacrylate containing a cycloalkyl group, the component (a2) is an acrylate or methacrylate containing a linear or branched alkyl group having 8 to 12 carbon atoms, and the component (a3) is an organopolysiloxane macromonomer containing a radically polymerizable group at one end. The content of the component (a1) is 50 to 90% by mass and the content of the component (a2) and/or the component (a3) is 10 to 50% by mass, both relative to the total amount of the constituent monomers. The acrylic copolymer is characterized in that at least 30% by mass of the acrylic copolymer can be dissolved in light isoparaffin at 25°C.本發明提供一種含有含環烷基之丙烯酸系共聚物的光澤、附著性、耐水性優異且化妝持續性極優異之美妝化妝品,較好的是唇部用化妝品、睫毛用化妝品、眼線化妝品。上述含環烷基之丙烯酸系共聚物具有以下特徵:其係將包含下述成分(a1)、成分(a2)及/或成分(a3)之單體聚合而獲得者,並且構成單體總量中,成分(a1)之調配量為50~90質量%,成分(a2)及/或成分(a3)之調配量為10~50質量%,且於25℃下至少30質量%溶解於輕質液體異構石蠟中。成分(a1):具有環烷基之丙烯酸酯或甲基丙烯酸酯成分(a2):具有碳數為8~12之直鏈或支鏈之烷基的丙烯酸酯或甲基丙烯酸酯成分(a3):單末端含有自由基聚合性基之有機聚矽氧烷巨單體。
