My DH works with people with cancer. The number of times people have said something completely idiotic based off this sort of stuff on the internet infuriates me. I can't imagine how frustrated it must make him.
I saw a similar one with a treatment for melanoma - I can't rember what it was called exactly but it was some sort of salve or balm that apparently dug it out and made it fall off. No studies cited, or an actual medical opinion noted anywhere.