Duo 2-In-1 Brush-On Eyelash Adhesive features the Duo Brush-On formula in dual-ended brush-on packaging with both shades: dark and clear. Dark blends with black or brown lashes, creates the illusion of a natural dark lash line and helps hide the lash band, while clear goes on white and dries invisibly for a no-liner look. Strong, long-lasting, all-day wear.