Originally Posted by High Plains Drifter
Capper - The people that make RainX for windshields also make a product called RainX AntiFog for the interior of windshields. You can find it in the automotive care section of many stores. It works pretty good! Make sure your glasses are squeaky clean (clean them with soap and warm water several times) and apply RainX AnitFog with a VERY SOFT cotton cloth. Apply it a couple of times.
Nothing will completely eliminate glasses fogging if you are steaming hot, the air is cold, and there is no breeze but this works the best for me. - HPD
I've been thinking of trying that. I use it on my car windows and it works well, but it may or may not be effective and safe on all plastic/polycarbonate lenses, which is what I have.
I think I'll give it a test on a couple pairs of old sunglasses and safety glasses...
It's a good thing I'm a packrat and never throw anything out...I knew I might someday find a use for those old, scratched up glasses.