A photo or in office evaluation is necessary.
Sheila Nazarian, MD, MMM
Beverly Hills, Board Certified Plastic Surgeon
Thank you for your question. Without a photo of the area it is hard to determine what is going on with your lip. The white area could be a result of the scab having just fallen off and likely the pigment will return with time. However, some people will get hypo pigmentation from liquid nitrogen treatment, especially if they have a deeper treatment. I would recommend you return to your dermatologist to evaluate the area to assess what is going on.