I've always had pre-cancer stuff sprayed (frozen) on my face and head each year. Stings for a few seconds then stops. Last week she found a spot on back of my right arm she didn't like so took a biopsy. I never saw it before but never looked. It came back Melanoma, that bad shit. No spraying gonna get rid of that. Gotta go in next week to have even more cut out to see how far it's progressed and already close to lymph nodes. My advice to all is to get a check each year and at least have someone around your house check your back, back of legs, neck, butt, and even between your toes and feet. And you do the same for them. This stuff is deadly if it gets into lymph nodes and travels to organs. And it doesn't all look like the pic I'm enclosing here. Any suspicions, make an app't to clear it up.