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Natalie Gibb

Why Does Spit Keep a Scuba Mask From Fogging?

By November 23, 2012

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Before diving, a diver applies spit or commercial defog solution to the inside of his mask to keep it from fogging. But why does it work? A client asked me this once, and my answer was, "I have no idea, good question!" I imagine a majority of divers do not know the answer either. How mask defogging works

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