A lift is an invasive procedure in which excess skin is excised and the cut is sutured up. This may be the best approach for excessive sagging because an RF treatment may not be able to fully correct sagging skin. The RF approach is beneficial for those who have mild to moderate cases of wrinkles or creases. In some cases, the doctor may recommend RF prior to a lift to stimulate collagen, which will also help the healing process once the patient undergoes surgery.