Some skin types are more likely to develop a temporary or permanent color change in the skin after a chemical peel. Taking birth control pills, subsequent pregnancy, or a family history of brownish discoloration on the face may make that more likely.
There is a low risk of scarring in certain areas of the face. Some people may be more likely to scar. If scarring does happen, it can usually be treated with good results.
For people with a history of herpes outbreaks, there is a small risk of reactivating cold sores. Your doctor can prescribe medication to prevent or treat that.