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1. The efficacy and safety of combined microneedle fractional radiofrequency and sublative fractional radiofrequency for acne scars in Asian skin
   J Cosmet Dermatol (2016) — DOI: 10.1111/jocd.12195 — PMID: 26578429

   Study in Asian skin evaluating combined microneedle and sublative fractional radiofrequency for atrophic acne scars, reporting clinical improvement in scar severity and texture with a favorable safety profile and low pigmentary risk.

2. Novel device-based acne treatments: comparison of a 1450-nm diode laser and microneedling radiofrequency in Korean patients (20-week split-face study)
   J Eur Acad Dermatol Venereol (2018) — DOI: 10.1111/jdv.14714 — PMID: 29178495

   Twenty-week randomized split-face study in 25 Korean patients: microneedling radiofrequency gave better long-term maintenance and superior texture and scar improvement than the 1450-nm diode laser.

3. Combination of Fractional Microneedling Radiofrequency and Ablative Fractional Laser versus Ablative Fractional Laser Alone for Acne and Acne Scars
   Yonsei Med J (2023) — DOI: 10.3349/ymj.2023.0234 — PMID: 37992744

   Randomized split-face study in 23 Korean patients showing fractional microneedling radiofrequency plus ablative laser was superior to laser alone for acne lesions and scars, with molecular evidence of sebum suppression.