ABSTRACT
This chapter reviews the various light sources, non-ablative and ablative lasers, and radiofrequency devices for acne scarring. Acne scars are polymorphous and require a multidimensional approach to successful treatments. Scars can be atrophic, hypertrophic, sharply marginated, incongruous, distensible and non-distensible. The most significant advance in the treatment of acne scarring is the development of non-ablative fractional laser resurfacing in the mid-infra red region. The ablative fractional lasers include the 2940 and 10600 nm lasers have been introduced and may offer similar results to non-ablative fractional lasers, but with fewer treatments. These non-ablative devices are best for subtle, shallow acne scarring and acne-associated erythema. Devices are best employed in acne scarring in combination with subcision, punch excisions and dermal fillers for complete treatment. The primary objective of using this device is to improve the erythema, which is often prominent in early acne scars.
