[Torpedo]

Originally Posted by Zeus

Don't bother with that stuff they sell as a pre-treatment, stick to toothpaste
Don't use gel toothpaste

That artificial spit works well as long as you're not left for ages before

Yep ... put toothpaste on the glass - as Zeus said, not the gel but the proper white stuff with the odd stripe or too. The reason for this is because the toothpaste contains itsy bitsy granules and as the mask comes covered in a fine layer of erm... something, the teeny weeny granules rub this off. Be gentle rubbing it off . Obviously rinse it after you’ve rubbed the toothpaste all over the glass (i say glass, but you know what i mean).

Any dives you do from now, I would repeat what Zeus said ... spit (in a ladylike way of course) into the mask and rinse with the water and hopefully you should be fog free!