DUO Dark Individual Lash Adhesive is a waterproof, latex-free glue designed for attaching individual lash extensions. Its formaldehyde-free formula delivers reliable hold for up to two weeks, keeping lashes in place through daily wear. The bottle’s dropper minimizes waste and helps prevent clumping. Key advantages include a black, latex-free adhesive tailored for use with individual lashes. How to use: apply a single drop to the tip of the individual lash extension, wait about 30 seconds for the adhesive to become tacky, then press it onto the desired lash line.