A new systematic review has compared two popular treatments for facial acne scars: fractional CO2 laser and microneedling. The study finds both methods offer comparable improvements for the common atrophic type of scarring.
The research analyzed 17 studies involving adults. While overall scar reduction was similar, the CO2 laser showed a higher rate of treatment success. However, it was also linked to a significantly increased risk of post-inflammatory hyperpigmentation, a darkening of the skin.
An important safety finding was that the CO2 laser caused less pain than radiofrequency microneedling. The authors conclude that the best treatment choice depends on individual factors like skin type, scar characteristics, and personal risk tolerance. Both are effective, but personalized approaches are critical.