The Perfect Adhesive For Your Fake Lashes Duo Brush-On Lash Adhesive with Vitamins A, C & E is hypoallergenic, fast-drying, and dries clear, quickly blends with your skin tone or previously applied eye makeup faux lashes a more natural look. DUO has been a favorite of professional makeup artists for decades, making it the world’s best-selling lash adhesive in the market! Lashes have never been easier! It comes with an ultra-thin brush for precise, quick application of both strip and individual lashes for all-day wear!