Make any false lash an underlash with DUO Bond & Seal. The pointy, medium firm foam applicator is easy to use and allows for precise placement of bond.. The clear bond is strong enough to hold lashes, yet gentle enough to keep natural lashes safe. The Seal formula is clear and designed to remove any tackiness from the Bond as well as to provide longevity for your lashes. Achieve a seamless and effortless lash look!