Laser skin resurfacing has become an important component of rejuvenation surgery. The laser allows for precise control of ablation depth and permits the surgeon to vary these depths as needed. The two wavelengths in common use are pulsed carbon dioxide and erbium:yttrium aluminum garnet. The principles and techniques of using these lasers for resurfacing and the practice of combining these wavelengths in sequence are described. Preprocedure and postprocedure measures also are discussed.