Essential to cream up before a journey - we use f50. I hate using it because it leaves your hands slimy. No problem with greasy hands though! Don't forget the backs of your hands and your ears, back of neck and "v" - shirt neck.
We always have long sleeves and covered legs and this follows a honeymoon road trip with no hat, no sunscreen and shorts. We regretted that for a long time.
A huge number of soft top drivers don't wear a hat, even when completely bald, and its barmy doing that.