I hope they all do...? or the risk of getting skin cancer would be huge since they are out in the sun so much. You can still get a nice tan!
I always use sunscreen but wash my hands with soap before I touch my racket and I leave the forehead out because I don't want the cream in my eyes. (and I wear a hat, so I don't need cream there anyway)
Your whole future depends on your dreams. So don't waste time, go sleeping!