The skin is removed layer by layer, which removes the uppermost portion of the scars, at the same time heat produced by the laser tightens the skin, which will help smooth out the scars. After laser skin resurfacing, the skin and its collagen remodel and smooth out the scars. Laser resurfacing is often combined with one or several other treatments for acne scars. This combination approach consistently gives better results when compared to other therapies. Laser resurfacing is superb for treating shallow boxcar scars, as well as for smoothing and tightening scars that have been treated previously.