DUO®, the best-selling adhesive in the world for over 60 years, has a waterproof formula ensures long-lasting wear while remaining gentle enough for contact wearers and individuals with sensitive eyes. New Brush-On adhesive comes with an ultra-thin brush for precise, quick application of both strip and individual lashes for all-day wear. This latex-free formula is safe for contact lens wearers and sensitive eyes. Lashes have never been easier.