We suggest that CO(2) FS used with a combination of two different treatment modes may provide a new treatment algorithm for acne scars in Asians.

Our observations demonstrated that the use of CO₂ FS can have a positive therapeutic effect on late-stage striae distensae.

Fractionated microneedle RF can have a positive therapeutic effect on inflammatory acne vulgaris and related scars. In addition, this technique does not worsen active acne lesions.

Many patients with burn injuries have various complications and emotional problems due to scars. Although various modalities to improve burn scars have been attempted, such as excision of scars, skin grafts, laser abrasion and silicone product usage, the cosmetic outcomes have not been satisfactory for a large portion of patients. Herein, we describe two cases which showed satisfactory cosmetic results after treatment of burns scars with the pinhole method using a carbon dioxide (CO(2)) laser that allowed us to make deep, closely set holes reaching down to the upper dermis. A 20-year-old female patient with a scar on her neck and a 25-year-old female patient with a scar on her right forearm after burn injuries are presented. As early as only a few weeks after the treatment, the scars showed relaxation of contracture, reduction of wrinkles and improvement of texture and color compared to before the treatment. Treatment of burn scars with the pinhole method can be easily performed and results in dramatic improvement in scar quality with only a few side-effects.

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