There are several different types of scars such as keloids (caused from an overly aggressive healing process), hypertrophic (raised) scars, atrophic (depressed) and acne scars. Treatment options include lasers and light devices that make scars appear lighter in color and less raised, stimulate collagen production to help fill in a depressed scar and CO2 laser resurfacing which can regenerate the collagen in the skin for an overall smoother and fresher appearance.