I met somebody talking about black salve who had an amazing experience with curing a skin cancer. Also Leonard Orr (rebirthing) spoke highly of its effectiveness on skin cancers.
Ninety+ yr old woman gave me a small jar of black salve and i have give a dab to patients to apply to skin and worked as advertised with mean angry wound reaction then nice pink new skin. 35% H2O2 works on skin CA even faster but maybe not deeper as dissipates faster than the tar salve. Tiny amount of salve is all it takes.