CO2 resurfacing can be a great option for treating lip lines. It is possible to do a CO2 treatment just for lip lines (peri-oral rhytids). If we are treating only this area, we will "feather" onto the cheeks and chin so that there is not a noticeable difference between the treated area and the untreated area. When I do an consult for CO2 resurfacing around the mouth, I do look at the entire face. We then decide, with the patient's input, whether we will do just around the mouth, or whether a full face treatment would be the best option. Remember, lip lines need a multi-treatment approach. This includes possible resurfacing (CO2), Botox injections to decrease the muscle contractions that cause the lines (puckering/turning the lips inward), filler to fill in the lines, and life style changes to decrease the actions that cause the lip lines.