Laser treatment for acne scarring works in two ways.
First, heat from the laser works to remove the top layer of your skin where a scar has formed. As this top layer of your scar peels off, your skin appears smoother, and the appearance of the scar is less noticeable.
As the scar tissue breaks apart, heat and light from the laser also encourage new, healthy skin cells to grow. Blood flow is drawn to the area by the heat of the laser, and inflammation is reduced as blood vessels in the scar are targeted.
All of this combines to make scars look less raised and red, giving them a smaller appearance. It also promotes the healing of your skin.