Keratosis
"Have used it for pre-cancer on my face probably 6 times since 1996. 

Using it now on a couple of spots on the back of my hand. 

Have always found it perfectly effective. Yes, after a couple weeks it begins to look raw and ugly, but that quickly clears up after treatment stops. In every case the spots were cured. Luckily I have never experienced any of the pain or itchiness that others have reported. Perhaps mostly the ones who had problems bothered to report?

And I still have the original tube of the produce I got back in 1996, and yes, it still works. There was enough in it to keep me going when needed it and obviously it didn&#039;t go bad. The fact it&#039;s in a metal tube may have enabled it&#039;s long life vs a plastic tube."