Originally Posted by Carbonfiberboy

I have some hair on the top of my head, but not much. It's pretty thin. When I wear a normal road helmet, I'd get 3 sunburn stripes on my head. Sunscreen is obviously not the solution. BUT! Get a Halo skull cap: https://store.haloheadband.com/Halo-Skull-Cap-p/sc.htm
and wear any good road helmet. The skull cap is not hot, quite the contrary. Might be cooler. Actually, buy 2 or 3 of them so you don't have to wash your only one after every ride. I've done mountain passes at 105° in one of these. It's fine. For a helmet, I use the Specialized Echelon II, which now has MIPS. About $100, but it's your head.