My issue is sweat in my eyes, I still haven't figured that one out. I tried a skullcap, but I never determined if it made the sweat running down my face better or worse. I have to stop every 10 miles or so and wring the sweat from my helmet pads. Once my sunglasses get sweaty, I can never get them clean on the road. I did also just purchase cycling specific socks, on longer rides 40 miles+, my Walmart athletic socks get soaked.