Tried them all: Sweat Gutr, Halo, Sweathawg, Headsweat with perspiration band and without. Sweat Gutr returned after one ride of burning eyes Sweathawg would've been returned but ordered online and didn't want to deal with the return. It's almost worthless as I get sweat in my eyes even on colder days. I was extremely disappointed with it as their marketing says it should work really well. The Halo worked well enough, but the thin rubber barrier bugs me. The one I use on any long hot ride is the Headsweat with the band. It works better than the others, but on a long climb on a 75+F day, I usually still get sweat in my eyes. Never tried the olive oil suggestion. Mine is garlic flavored. If it really works I get to keep the sweat out of my eyes and ward off vampires too! Win win.