For years and years now, in one area on my lower lip, the skin grows in thicker, like plastic leather. I always pick it off to make it feel smooth as the rest of the lip area. But of course, it leaves the area red. Does anyone know why skin cells act or grow differently on the lip area? I've tried various moisturizers offered from a dermatologist clinic, such as Locoid. No moisturizer seems to help or change the cell composition of my lip. Should I consider laser treatment?