Well, years ago when they did it, they did a wedge cut biopsy on the outside lower lip which wasn't the best choice in hindsight in terms of aesthetics. The biopsy healed but it sucked having that a gash on the lip. The scar eventually healed but there was still peeling over the scar. I would recommend they do a punch biopsy on you from the inner part of the lip from inside of the mouth that penetrated deep enough. That would be the best choice I think cosmetically.