For the holidays this year you may have received a brand new mask! One very important thing you'll need to do before using your new mask, is to clean the lens or lenses. There is a thin film on the glass of every mask. If it is not cleaned off your mask will fog when you use it, even if you use de-fog. To clean, take a liquid with some grit in it like toothpaste (the paste kind, not gel), soft scrub or Sea Buff and rub it all over the lenses of your mask then rinse off. You can repeat this several times to be sure the film is off and you have a fog-free mask experience!