Before diving and snorkeling, clean masks with Sea Buff Pre-Cleaner. Cleaning dive masks is a recommended step prior to anti-fog treatment. Sea Buff's quick-clean formula removes the silicone residue on new glass dive mask lenses. For older gear, it takes care of dirt, sunscreens, and algae that can interfere with anti-fog treatments. Just apply, rub, rinse and repeat. Keep dive masks clean and ready for anti-fog treatment with Sea Buff Pre-cleaner.Pre-cleaner - Preps the surface for GEAR AID anti-fogsPowerful - Removes residue, dirt, and other debrisCleans Gently - Does not harm or scratch slatesConcentrated - One small bottle cleans multiple dive masksSpecialized Formula - For use on tempered glass lenses only; test small area before usingSize: 1.25 fl ozApplication: rub onFor Use On: tempered glass lensesMade in the USA