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Casabona, Gabriela; Alfertshofer, Michael G.; Kaye, Kai O.; Frank, Konstantin; Mercado-Perez, Arnaldo; Hargiss, John B.; Green, Jeremy B. and Cotofana, Sebastian (2021): Safety and efficacy of microneedling technology in the treatment of acne scars. In: Journal of Cosmetic Dermatology, Vol. 20, No. 11: pp. 3482-3491

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Background Current options for the reduction of acne scarring (eg, ablative laser resurfacing) are associated with considerable side effects and limitations in terms of patient population. Percutaneous collagen induction via microneedling poses an alternative treatment method due to its low rates of reported adverse events and side effects. Objective To assess the safety and effectiveness of microneedling treatments in reducing acne scars. Methods A total of 22 patients (18 females and 4 males) with a mean age of 38 +/- 7.6 years were assessed regarding the appearance of facial acne scarring. Acne scars were assessed via the Acne Scar Assessment Scale (ASAS) and the Goodman and Baron acne scar grading scale before and after two/three treatments. Additionally, the post-interventional development of side reactions, adverse events, and patient-reported outcomes (eg, pain/discomfort, skin redness) was reported. Results Compared to baseline, the mean ASAS value was improved statistically significantly on average by 1.41 and 1.46 after the second treatment as assessed by the independent raters and the patients, respectively. In patients who received a total of three treatments, a statistically significant mean improvement in ASAS value of 1.35 and 1.66 compared to baseline was assessed by the independent raters and patients, respectively. No unexpected adverse events were reported. The severity and rate of side reactions decreased over the course of this study. Conclusion Microneedling treatments can pose a safe and effective option in the reduction of acne scarring. In this study, microneedling helped achieving a significant reduction of acne scars while showing high patient safety.

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