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OBJECTIVE To evaluate the efficacy and safety of the low-fluence 1,064-nm Q-switched neodymium-doped yttrium aluminium garnet (QSNY) laser in treating infraorbital dark circles.

PARTICIPANTS AND METHODS Thirty women with infraorbital dark circles (predominant color dark brown) participated in this open-label study. Participants underwent eight sessions of low-fluence QSNY laser treatment at 4.2 J/cm2 at 3- to 4-day intervals. A spot size of 3.5 mm was used, with a pulse duration of 8 ns. The melanin deposition in the lesional skin was observed in vivo using reflectance confocal microscopy (RCM). Morphologic changes were evaluated using a global evaluation, an overall self-assessment, a narrow-band reflectance spectrophotometer, and a skin hydration measurement instrument.

RESULTS Twenty-six of 30 patients showed global improvement that they rated as excellent or good. Twenty-eight rated their overall satisfaction as excellent or good. The melanin index indicated a substantial decrease, from 225.84 at baseline to 182.65 (p<.05). RCM results showed a dramatic decrease of melanin deposition in the upper dermis. Adverse effects were minimal.

CONCLUSIONS The characteristic finding for dark-brown infraorbital dark circles is melanin deposition in the upper dermis. Treatment of infraorbital dark circles using low-fluence 1,064-nm QSNY laser is safe and effective.

The authors have indicated no significant interest with commercial supporters.