Use a brimmed hat, long sleeves and make sure you use and reapply factor 50 sun screen throughout the day.
With limited UV protection in low oxygen environments, you need to be protected from the harsh rays of the sun. Use a brimmed hat, long sleeves and make sure you use and reapply factor 50 sun screen throughout the day. If you get sun burned, you add to the list of problems your body is already struggling with on route to Everest Base Camp.