PROBLEM TO BE SOLVED: To provide an eyelash cosmetic which is excellent in an eyelash-curling effect and sustainability thereof, can simultaneously have other effects, and is excellent in the uniformity and glossy sense of makeup films.SOLUTION: This eyelash cosmetic is characterized by compounding a volatile oil and a new cycloalkyl group-containing acrylic copolymer dissolved in a light liquid isoparaffin in an amount of at least 30 mass% at 25°C, is excellent in a curling effect and sustainability thereof, and is excellent in the uniformity and glossy sense of makeup films. The eyelash cosmetic is further preferably compounded with a powdery material.COPYRIGHT: (C)2010,JPO&INPIT【課題】睫のカール効果及びその持続性に優れ、同時に他の効果も併せ持つことが可能であり、しかも化粧膜の均一性及びツヤ感に優れた睫用化粧料に関する。【解決手段】軽質流動イソパラフィンに25℃で少なくとも30質量%溶解する新規なシクロアルキル基含有アクリル系共重合体と揮発性油剤とを配合することにより、カール効果及びその持続性に優れ、化粧膜の均一性及びツヤ感にも優れる睫用化粧料を提供するものである。更に、粉体を配合することが好ましい。【選択図】なし