I need to wear sunscreen. On my bald head and on my nose, mostly. I am a fair skinned person, and have a good tan, like most of us do, as we spend a lot of time outside. But on rides over a couple of hours, I apply sunscreen to all exposed skin. I also live at altitude in Denver(5280ft above sea level, ). This adds like 20% more sun. First off...I am a sweater to begin with. Everywhere I apply the sunscreen I sweat more, than without it. My nose will drip sweat, if I put it just on my nose, my bald head will pour it with the sunscreen. I use a "sport" type(banana boat sport spf 30) sunscreen, so it doesn't come off.