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Old 05-07-2017, 05:12 AM   #14
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Join Date: Mar 2014
Location: Utah
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Re: Masks that are actually anti fog

Originally Posted by Xylophone View Post
I've never had any issue with a mask fogging after toothpasting it before the first dive and spit every time right before I put it on to go in. As I understand it saliva is slightly alkaline which affects the surface tension of the moisture and prevents water droplets from forming on the glass. That or I could just be completely talking out of my ass.
That would explain why soap/shampoo have the same effect. Soap being alkaline.
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