Prescriptives’ Here To Stay 24-Hour Longwear Mascara can be worn alone for waterproof benefits or over any Prescriptives’ mascara to deliver a water-resistant shield. Its advanced 24-hour, longwearing, smudge-resistant formula lifts, defines and separates lashes. Longwear Polymer bonds to lashes for a look that lasts. A unique flexible comb brush is specially designed with 360-degree-tapered bristles that grab, comb and lift each lash. It's the first 24-hour mascara in the market.