As the plasma hits the skin, energy is rapidly transferred to the skin surface, causing instantaneous heating in a controlled uniform manner, without an explosive effect on tissue or epidermal removal. In pretreatment samples, the zone of collagen shows a dense accumulation of elastin, but in posttreatment samples, this zone contains less dense elastin with significant, interlocking new collagen. Repeated low-energy PSR treatment is an effective modality for improving dyspigmentation, smoothness, and skin laxity associated with photoaging.