12 hours waterproof long lasting mascara It is non-irritating and smudge-proof, and can fix curled eyelashes while increasing eyelashes. The unique curl lock formula gives lashes long, expressive results for up to 12 hours. The deepest black instantly adds drama to your eyes, making the simplest eye makeup look glamorous. Create perfectly curled lashes with Waterproof 12-Hour Lash Enhancing Mascara.