Fig. 1.From: 577-nm high-power optically pumped semiconductor laser is safe and effective in the treatment of inflammatory acne: a prospective, single-center, split-face comparative study577-nm high-power optically pumped semiconductor laser (HOPSL) is effective in the treatment of inflammatory acne vulgaris: five representative cases, showing acne severity at baseline (a, c) and 4 weeks after treating the left side of the face with 3 sessions of 577-nm high-power optically pumped semiconductor laser (b) versus no treatment for the right side of the face (d). Clinical improvements were significantly better on the laser-treated side (b vs. d)Back to article page