Scubamedicjoe
Contributor
hey got a guestion I have a wide face so allot of them low folum masks dont feel right so i bought a new mask its a parkway but the guy at dive shop said to use toothpaste on it first does anyone know why hum strang thank
masks
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squidguy
Contributor
Yup toothpaste is used to clean any gunk eg. silicon residue, grease, etc from the manufacturing process. Any gunk on the glass accelerates the fogging process... btw use a antifog on the glass before each dive to prevent grief! Toothpaste has a very mild abrasive that won't scratch the glass... rinse well. Also repeat as needed. 
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