BobDDuck
Island Bus Driver
Straight from the head of ALPA's Aeromedical Department a number of years ago: every transport category aircraft windshield shields UV rays just as effectively as a very strong sunscreen. You're getting yourselves all greasy for nothing.
The FAA and DOD did a study a few years ago. About 50% of UV-A gets through most glass windshields. UV-B is much less. I think I'll keep putting on sunscreen.
http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA471609