Results: All patients experienced improvement (P \ .0001). Postinflammatory hyperpigmentation developed in one patient with freckles and 8 patients with lentigines after QSAL. No postinflammatory hyperpigmentation occurred after IPL. Freckles achieved greater improvement after QSAL than IPL (P = .04). In lentigines, the results after IPL were better than QSAL among those with postinflammatory hyperpigmentation after QSAL.
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A Comparison of Laser and IPL for the Treatment of Freckles and Lentigines