Stopping your silicone mask from fogging
There are at least three things you can do to stop your mask from fogging up:
Clean a brand new mask.
Spit in the mask before it gets wet.
Don't take it off during your snorkelling session.
1. Cleaning a new mask
A new mask is likely to have compounds from the manufacturing process adhering to the glass. These compounds can attract vapour from your breath on to the lenses and thus the lenses get fogged up when you use the mask.
To remove any film from the inside of the glass, before you use the mask for the first time put a small squeeze of toothpaste and a small squirt of dishwashing liquid (any mild detergent like shampoo will do) on the inside of the glass and work the mixture thoroughly over the glass.
Scrubbing the inside of the skirt won’t hurt either but DON'T scrub any plastic windows the mask might have at the sides. Spend about five minutes (or longer) scrubbing away. If possible allow the paste to dry on the lens then wipe out with a dry cloth. Wash out well with fresh water and allow to dry.
You should only need to do this once for a new mask but sometimes a mask will benefit from this treatment after a few months in storage.
2. Before it gets wet
Before you use the mask each time, while it is still dry, spit in the mask and rub this over the lenses well, then rinse out the mask with sea water and put it straight on your face.
If you don't like the idea of spitting in the mask you can get small bottles of anti-fog from most dive stores to use instead.
If you don't like the idea of wearing a mask that someone else has spat into - get one of your own and carry it with you on holidays.
3. Don't take it off
If you are able to leave your mask in place until you leave the water this will also help avoid fogging. Taking it off and putting it on your forehead changes the temperature of the lens and can encourage fogging.
See also our mask usage tips for other good reasons not to take your mask off.
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