I still have some hair but it is now at a #1 clipper guard COVID-19 special length (⅛") so it is next to nothing. But I've worn Headsweats under my helmet for years to keep the sweat out of my eyes but they also work great to stop sunburn and I wear a normal Giro helmet with lots of vents. It has been sunny here for weeks on end but the only sunburn I got on the top of my head was from weeding the yard without a hat. There are several different brands out there to choose from.