Comparative study on efficacy and safety of 1550nm Er:Glass fractional laser and fractional radiofrequency microneedle device for facial atrophic acne scar

摘要

BackgroundThe 1550nm Er:Glass fractional laser is widely used for the treatment of atrophic acne scar. A novel fractional radiofrequency microneedle device has recently emerged as an alternative for treating acne scars.