The Dr. has had me put Efudex on my arms. It basically made them look like there were full of sores but the Dr. said it was fine. Eventually they all healed but it didn’t seem to prevent cancers forming later.
I had a basal cell removed from my temple by Moh’s surgery. Doc said it was standard procedure for one on the head (not cheek).
https://en.m.wikipedia.org/wiki/Mohs_surgery