Abstract
Various factors contribute to post-acne scar development and mixed epidermal lesions, making it crucial to consider combined approaches instead of monotherapies for better results. This case series study with a split-face design evaluated the combined laser therapy of fractional Er:YAG 2940 nm and long-pulse Nd: YAG 1064 nm on the right hemiface, and fractional Er:YAG 2940 nm with micropulsed Nd: YAG 1064 nm on the left, for atrophic post-acne scar reduction after three sessions. Eight patients were assessed using the global quantitative acne scar classification scale before, during, and after treatment, with an average age of 29 ± 9 years, mostly women (62.5%) and phototype IV (37.5%). Significant improvements of 59.9% on the right hemiface and 59.1% on the left were observed, with no statistical differences between protocols. Both treatments are safe and effective in progressively reducing mild to moderate acne scar severity.
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