ABSTRACT
INTRODUCTION Aging of the skin can be attributed to both intrinsic physiological processes and external exposures in the form of ultraviolet light. This photoaging is characterized by rhytides, rough texture, dyspigmentation, and loss of elasticity. Histologically, epidermal thinning, disorganized collagen bundles, and clumping of elastic fibers are seen (1). Similar changes may induce formation of superficial capillaries that manifest as facial telangiectasia. Given rapidly advancing technology, the physician interested in treating these signs of cutaneous skin aging can select from among several different laser devices. Although different crystals, liquids, and gases can be used to produce laser light of various wavelengths, some have clinical efficacy limited to particular applications. This chapter reviews the most commonly used lasers and light-based treatments for targeting age-related skin changes.
