Background: Microneedling is a popular, minimally invasive skin rejuvenation modality for acne scarring. Recent reports have evaluated the efficacy and safety of microneedling monotherapy and combination treatment for scarring.
Objective: This review aims to systematically analyze the current literature on microneedling techniques used for acne scarring.
Methods: A PubMed search (2009-current) was used to identify literature on microneedling treatment for acne. All randomized and nonrandomized clinical trials, case cohorts, case reports, and case series were included with the exception of 2 studies, which were excluded due to unavailability.
Results: All 33 articles evaluated showed improvement of acne scar appearance after microneedling treatment. Evidence was inconsistent when comparing microneedling monotherapy to dual therapy or to fractional laser treatment.
Conclusion: Microneedling improves acne scarring, and further studies are needed to compare microneedling with other minimally invasive treatments.