You can get them at Amazon or the nearest Golf Galaxy. Had a spot removed two years ago from my arm that was (thankfully) Basal-Cell in situ.... had yet to develop into a cancerous lesion.
I've lost two dear friends to Melanoma over the past several years. If you don't use protective clothing, please use no less than 50 spf sunscreen and apply prior to the round and at the turn. Remember to get the ears, arms, neck and legs.
I'm a fan of Neutrogena products. I apply a wipe-on covering prior to the round and a spray-on covering at the turn.
50 spf - otherwise you're basically putting on a base-layer that isn't gonna protect much, especially if you sweat and are constantly wiping (like me).
As my friend said many years ago - it's hard to get laid without ears. 😉