Now I'm becoming follically challenged I tend to wear a hat. I have a couple of tweed flat caps I usually wear outdoors or a white cotton one in the Summer. In Greece I wear that or a wide brimmed Tilley hat. In the garden and doing odd jobs I wear a paint-stained blue trawler cap. I also have a brimemd waxed cotton hat for very wet walks. I may be turning into my grandad who always wore a hat (cap or trilby) outdoors and indoors always wore a white cotton cap.
I don't wear a hat while driving!

RtS