Hi....I read several messages about Carac as a treatment for precancerous cells on the lips but I wondered if anyone else might have something to add. I have seen two dermatologists. One is strongly suggesting that I use this and the other staes he agrees that it is an appropriate treatment but that he personally would not do it. Also, the instructions I got with the cream say that you should not use on mouth. Lastly I would like to know how long it takes for the lips to fully heal. Any thoughts you could share would be helpful.