Test for mask fog

[mcm737]

Hi everyone,
I just purchased a Seacsub diving mask and have put a lot of toothpaste in and rinsed it, put again, etc however when I exhale in it it still fogs. Is this normal when you exhale or is there some other test that I can do to see if it will fog underwater?

Thanks
m

 

[jar546]

Fix all your problems here. I swear by this stuff. Never, ever had a problem. Can go 2 long dives without applying anymore in between.
Sea Gold? Anti-Fog Gel for Dive Masks

 

[USCScubaboy]

+1 on the gel. Some types of toothpaste can ruin your mask.

 

[mcm737]

Thanks for the replies. Will have to try that out I guess...

Would you know if there is a way to test the mask on the ground beforehand?