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 concentrated and quick-clean formula removes the silicone residue on new glass dive mask lenses. For older gear, it removes 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.