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Acne is a common disease affecting a large population. A small number of patients with inflammatory acne develop obvious scarring over time, which remains a therapeutic challenge despite various currently available technologies, such as surgical operation, laser and chemical peels. Recently, fractional laser brings a breakthrough in the treatment of acne scars. This article presents an overview on the epidemiology, etiology, clinical features of acne scars, as well as on the clinical application, advantage, disadvantage and side effect of various types of laser, including ablative laser, nonablative laser, fractional laser.

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