Rather than spray on anti fog you can now effectively roll on anti fog solution onto your mask for improved results.
For a fog free dive simply wash the inner surface of your mask lens with water. Then apply several drops of this anti fog solution, spread lightly and evenly across the lens surface using the supplied applicator sponge. Gently rinse with water and the mask is ready for a long clear dive.
good product but make sure to apply correctly. i had clear mask for all of dive, but other did report this didn't work for them but could be down to not following intructions correctly
I really liked it and it was my favourite out of three I have tried this holiday. Easy to use. works every time. I have used half of it between two diving a week on liveboat.