I am a heavy sweater (4 pounds water per hour on a hot day) and am always fighting sweat in my eyes. I've tried about everything out there and can deal with it, but on a long ride on a hot day there will almost always be an occasional problem.

When I watch coverage of the TdF, Giro, etc. these guys are often riding in very hot weather but I NEVER see them obviously fighting sweat in their eyes. What is their magic secret? Is it simply that their faster pace and stronger 'artificial breeze' mitigates that (plus some serious drafting)? When I go out for a solo 2'ish hour ride with a serious, but not maximal effort, I will probably average at least 19 mph. So I'm not lazing around (but not climbing at 19 mph either).

But I almost never see these guys wiping sweat from their eyes (that I remember) and I don't recall seeing all kinds of headband, skull cap, sweat gutter, etc. crap under their helmets.

dave