Combination treatment with 30% salicylic acid and fractional CO laser for acne scars: A 20-week prospective, randomized, split-face study.

Multiple approaches are used to treat acne scars, but some are expensive, ineffective, and cause complications. We aimed to evaluate the efficacy and safety of ultra-pulsed CO fractional laser combined with 30% supramolecular salicylic acid in the treatment of acne scars in a prospective split-face control study. Twenty patients with facial symmetrical acne scars were enrolled.