Fractional CO2 Laser Versus Micro Needling Radiofrequency for Post Acne Scarring: A Meta-Analysis of RCTs

Area of Science:

• Dermatology
• Aesthetic Medicine
• Evidence-Based Medicine

Background:

• Post-acne scarring significantly impacts quality of life.
• Fractional CO2 laser (FCL) and microneedling radiofrequency (MNRF) are common treatments.
• Comparative data on FCL and MNRF for acne scarring is synthesized.

Purpose of the Study:

• To compare the efficacy and safety of FCL versus MNRF for post-acne scarring.
• Evaluate outcomes including scar improvement, patient satisfaction, pain, and side effects.
• Provide evidence for individualized treatment selection.

Main Methods:

• Meta-analysis of eight randomized controlled trials.
• Included 249 patients with post-acne scarring.
• Assessed scar improvement, satisfaction, pain, post-inflammatory hyperpigmentation (PIH), and erythema duration.

Main Results:

• FCL showed superior scar improvement (MD: 0.31) and patient satisfaction (MD: 0.32).
• FCL had significantly higher pain (MD: 2.14), PIH risk (RR: 4.44), and erythema duration (1.72 days longer).
• MNRF demonstrated a more favorable safety profile.

Conclusions:

• FCL is more effective for acne scars, but MNRF is better tolerated.
• Treatment choice depends on individual factors like skin type and pain tolerance.
• Further research with standardized outcomes and longer follow-up is recommended.