Transdermal Delivery of Poly-l-Lactic Acid via Fractional Microneedle Radiofrequency for Atrophic Acne Scars: A Split-Face Randomized Study in Fitzpatrick Skin Types III to V. - Kupwiwat, Rosalyn; Techapichetvanich, Thanya; Bhorntarakcharoen, Woramate; Sittiwanaruk, Sariya; Li, Jayne Bernadeth; Manuskiatti, Woraphong (Dermatology & Therapy, 2026)