Lash Slick curls and sculpts as it lengthens, enhancing the look of your natural lashes instead of clumping them together or spackling them in product. Teeny-tiny fibers coat lashes from root to tip to create a lengthened baby-extension, while flexible film-forming polymers lift and lock each fiber into place. And it’s water-resistant (not waterproof), so Lash Slick washes off easy with warm water at the end of your day.