In general, lasers are not used for active acne. Blue light treatments with or without Levulan is the only laser/light treatment for active acne. Technically, this is not a laser treatment; it is a light treatment.
V-beam may be effective for fresh (red) acne scars.
At the Obagi Skin Health Institute, CO2 fraxel in combination with a modified TCA peel has been the most effective treatment for acne scarring. Laser and chemical peels are done in one setting. Amazing results for acne scarring. CO2 fraxel alone is not enough.