FYI, I ran two tests of an alternative to heavy sunscreens for UPF protection. The biggest problem is the product seems to be discontinued but is available at sierra trading post.
It's a summer balaclava by Dr. Shade. I tested it at 84F yesterday and did not overheat. Here's a quick and dirty review:
-- doesn't make you cook like Solumbra clothing
-- has breathing mask
-- covers entire head except for sun glasses
-- super cheap right now
-- tan color
-- face does not feel hot when the sun hits it
-- breathing mask area is a bit too small
-- opening for glasses could be a bit larger
-- need to have cloth on nose, or it's harder to breath.
So if you like the idea, you might grab one or two before they run out.