DUO Brush-on Lash Adhesive Dark - Latex and Formaldehyde Free! This hypoallergenic, long-lasting adhesive is formulated with Vitamins A, C & E and is also latex and formaldehyde free. Lashes stay on for up to two weeks using this waterproof formula. Customize your look, from natural to glamorous, with the easy-to-use dropper bottle that eliminates any mess or clumps. To remove lashes, simply use baby oil and a Q-Tip to dissolve adhesive. To use, simply apply a think line of Duo Lash Adhesive along the lash band. Wait 30 seconds for the lash glue to set. Apply lashes as close to your eyelid as possible. Secure lash band by pressing onto lash line. This DUO Brush-on Lash adhesive dries dark and blends well with black or brown lashes. For best result, apply full makeup first and lashes last.