I'm a recent convert to skull caps. About a year and a hlf ago I was on vacation in Ecuador - at the equator and at 10'000 feet, and for the first time I got a sunburn on my scalp. I'm not bald, but I'm getting thin up there, particularly in the front. That was a wake-up moment for me. Now I don't ride without the skull caps. Like everybody says, they actually keep you cooler.

No sun screen above the eyes. I learned that one the hard way some time ago. I'm sure you all learned it too.