I know a couple of people with skin cancer; some from too much sun, one with melanoma. May be helpful. Plus I have a long ping list for the health thread.
Remember, it needs a way in. DMSO is another way if you don't want to try the derma roller, but the picking (like at a scab) seems essential. I had the melanomas on my thigh right where my shorts line would be as a child. I got blistered on that line a lot when I was a kid. I also think carry the stupid phone in my pocket for years didn't help at all. The phone was always in my left pocket and that's where the melanoma were. They were NOT on the right side.
Recommend pre/probiotics in the evening with dinner to restore/preserve good digestive enzyme gut health.