Here's the simple step healthcare professionals (and savvy tradespeople) take to keep their eyeglasses fog-free while wearing a facemask. Image source: Envo Mask First off, understand what that fog on your lenses is. As you exhale through the mask, some of that air goes straight upwards. The water vapor droplets from your warm, exhaled breath condense on the cooler surface of the lenses, forming that fog. Image source: Eyeglass Factory Outlet If the droplets were unable to stick to...
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