This hypoallergenic and fast-drying adhesive dries dark, undetectable, waterproof, holds strip lashes securely in place, and is easy to remove without damaging the natural lashes or irritating the eyes. Works best in all lash styles - dark color, thick and voluminous lashes, and perfect to finish smokey eye makeup. No wonder why professionals and lash lovers alike have made duo the best-selling adhesive in the world for over 60 years