Had all kind of pre cancerous weirdness burned off my arm some years back. Living in the sun and knowing nothing about sunblocks back in the day will do that. As I still live on the beach (literally) and spend much time outdoors, sunblock is a part of my life. Your concern about not slathering yourself in goop is legit....that's why we use Bullfrog. Crazy water resistant and residue free, this is some great stuff. Readily available at most drug stores (Walgreens, CVS, etc.)
"Here in this darkness, I know what I've done..I know all at once who I am"