Never fear a cat eye again! liner.designer, beautyblender®'s newest eyeliner application tool, is a genius triple-edged eyeliner guide. It becomes your steady hand and symmetry expert when applying liner to your eyes. It's now easy to achieve your favorite eyeliner styles with ease and makes applying liner effortless. Perfect for use with all eyeliners, pencils, pens, gel creams, liquid and powder.