Sunscreen with at least 5% Titanium Oxide or Zinc Oxide. My whimsical research efforts has revealed that anything else is not really good enough. I did a
thread on this years ago with links to the research I found.
Blue Lizard is supposed to be the go, seems to be one of those australian products only available in USA. group buy?
Yesterday i did another round of looking for better hats for golf. The biggest issue for me is that most hats push down on the Glasses arms, and I cant play without a hat or glasses. As best I can tell, there really is no decent all round golf sun protection hat. They are either going to be not wide enough in the brim, like gilligans bucket hats, too hot, blow off easily in the wind, and make you look like farmer brown . It seems to me that most of the golfing world play in weather where hats are not required. Come to think of it, I cant remember ever seeing Nicklaus play golf in hats.
I ordered a Barmah Canvas Sportz - delivered for $40, I have had one of these before, its pretty good, but someone nicked it. Its not a crushable though so a pain in the neck to carry about when you dont need it, likewise would be any of the Akubras or any other G.Norman style.