Abstract
The treatment of acne and acne scarring with lasers and light-based and energy-based
technologies has become an integral component of our therapeutic arsenal. Lasers including
infrared wavelengths and pulsed dye lasers; light devices including blue light, red
light, and broadband light; and photodynamic therapy with aminolevulinic acid and
methylaminolevulinic acid have been shown to be effective in the treatment of acne
vulgaris. The optimal outcomes are achieved with photodynamic therapy combined with
medical therapy. Acne scarring has been best treated with lasers, including nonablative
infrared lasers, fractional nonablative and ablative laser resurfacing, and most recently
needle-based radiofrequency devices.
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