Laser resurfacing is a popular treatment for many skin defects. The most popular laser types used for resurfacing of acne scars are the carbon dioxide (CO2) and erbium:YAG (Er:YAG) lasers. Lasers work by essentially burning the top layers of skin to a precise depth. The skin then heals replacing the burned layers with newer appearing skin. The correct post-operative care of skin that has undergone laser resurfacing is a critical factor in determining the success of the procedure.