Use of combined fractional carbon dioxide laser and fractional microneedle radiofrequency for the treatment of acne scars: A retrospective analysis of 1-month treatment outcome on scar severity and patient satisfaction.

Background: Acne scars lead to social and psychological problems for patients, and they should be treated effectively. Ablative and nonablative lasers have been used for the treatment of acne scars in recent years.

Aims: The aim of this study was to evaluate the effectivity of combined FCL and FmRF treatment for acne scars retrospectively.