Straight out of the box, the lens of the Tidal Mask has already been treated with a special anti-fogging film.
However: one thing I want to make very clear. You absolutely MUST NOT treat your ProShot Tidal with toothpaste, burning or any other new mask treatment method as you would for a normal scuba mask.
Doing so will destroy the anti-fogging film and then this mask will fog terribly – and none of the usual treatment methods you’d do for a dive mask will work. It’ll be unusable!
The whole point of the Tidal Mask is that it’s ready to use and not fog straight out the box without pre-treatment.
In addition to the pre-applied fogging film, it also includes an anti-fogging spray – although you shouldn’t need to use it until you’ve already had your Tidal Mask for 6 months.
Do lightly rinse your Tidal Mask with freshwater and soap after each dive.
So…provided you follow all these instructions – it’s a great mask and it really does appear to not fog. That was my experience anyway and the same for many other reviewers.
Admittedly, some reviews on amazon do stay that this mask still fogs. Was that because those people didn’t follow the instructions? It’s hard to know for certain, but I’d be inclined to say yes.
In my own personal experience, following these guidelines will result in the Tidal Mask remaining awesomely clear on all your dives!