500 PSI Mask Scrub is the best way to clean your new mask! All new masks come with an oily film on the lenses. This film is from the manufacturer and helps protect it during shipping, but makes the mask fog like crazy! Remove this film with 500 PSI Mask Scrub. Simply apply to the dry lenses, rub with your fingers, then rinse clean! When you’re ready to dive, apply some defogger and you’ll have crystal clear lenses while you’re under the sea.