I have been on Blck salve now for about a yr.. I can tell you this it only destroys cancer cells, I have tried it on a normal area and nothing.. I apply it and it burns the cancer cells, and draws the cancer cells around it to a local point.It is not for everyone, I can tell you I have spend many a night up with it.I have to take pain pills to use it.. and it does destry the cancer and not the healthy cells around it.. I would advise anyone using it to get a doctor to help you with it..for you dont want to apply it on a blood vessel oe something. A little of it goes a long way. and any questions please feel free to email me..