Principles and practice of cutaneous laser and light therapy.

Laser technology has evolved rapidly in the last 2 decades. The theory of selective photothermolysis guides the proper selection and use of lasers to safely and effectively treat patients. This review summarizes the basic concepts and adjustable parameters for laser devices, emphasizing the importance of selective photothermolysis in clinical practice. It then covers the clinical applications of laser devices, including vascular lesions, hair removal, tattoo removal, facial rejuvenation, and fractional resurfacing. The authors intend to make the reader feel comfortable with the proper selection and application of lasers to treat their patients.