Question: how to make a scuba diving mask fog proof?

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Answer #1:

Get a new one and see how that works out. If it's still foggy, then make sure the mask has a firmer grip on your face. That usually helps me when it gets foggy.

Answer #2:

Well, you used the toothpaste ( not gel) and that should have removed the coating they put on at the factory ( this is good). Using a proper defog should work for you. There;'s no reason it shouldn't unless you're rinsing it all out and rubbing with your thumb, which you shouldn't do.
Add a drop to each lens (two drops if this is a single lens mask), rub it around, dunk in fresh water, swish and dump out. You should be good to go for the entire dive. It's pretty fool proof.

Answer #3:

When you tried the toothpaste (not gel) did you just smear it around or did you use a little elbow grease?

Most students that continue to have fogging issues, I ask that same question. It is kind of funny that once I clean their mask with toothpaste it doesn't fog up any more. Be generous, put a good amount of toothpaste in there and really work it "into" the mask. Don't be afraid to really push.

Answer #4:

Totally agree with Doug. To clean the lubricant from a new mask lens you need to expend a little effort. My usual instructions include rubbing the lens interior with paste until it squeaks, rinsing, and then doing it again.

Once the lubricant is removed, you still need to defog it before each dive using various methods such as spit, baby shampoo, commercial defogging solutions, etc etc. The toothpaste cleaning, done properly, should only need to be done once.

Just so to not overlook the obvious...you've been cleaning the INTERIOR side of the lens, right? :-)





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