Sea Drops is designed for maximum dive mask defogging and quick, easy, in-field application. Safe for all glass and plastic lenses AND will not harm surrounding silicone or rubber support frames.Also excellent for ski goggles, eye glasses, face masks, binoculars and telescopes. Proven, long lasting liquid formula Concentrated, two-drop application Non-abrasivesafe for all lenses and optics Performs well in extremely cold water Non-toxic, biodegradable and alcohol-freeSea Buff - Specially formulated dive mask precleaner and slate cleaner. Sea Buff carefully removes residue left on new dive mask lenses by the manufacturing process and prepares the surface for the first application of anti-fog formulas. Sea Buff also removes other residue accumulated on masks while diving or during storage. Sea Buff is also ideal for cleaning dive slates without harming or scratching.