Our endlessly buildable mascara is now available in a waterproof + smudge-proof formula for 24-hour wear! Endlessly buildable, clump-resistant M·A·CStack Waterproof Mascara gives you customizable volume + length in a pool-proof and tear-proof formula. Our Drench-Defense Technology helps to wrap this waterproof mascara around your fringe to protect each individual lash by repelling water. Stack on infinite waterproof layers of volume + length with M·A·CStack Waterproof Mascara!