Originally Posted by rajman
Do any of these suggestions work below minus 20 C to prevent ice formation on glasses/goggles? It;s no fun to ride with your eyelashes frozen shut, nor is it any fun to try and see through a sheet of ice formed from your own eyesweat...
Just wondering
I don't know about riding at -20C, but back when I was x-c ski racing in temps like that I used Cat Crap defogger and it worked well.
Another skiing trick is to get a little bit of Vaseline on your fingertips and rub your eyelashes with it. It will keep sweat from gathering there and freezing. Smear a little on your eyebrows, too, and it will make the sweat run off to the sides of your face.
The worst was seeing the guys with full beards coming across the finish line of a 50K race with about 3 pounds of ice hanging off their face.