A common cosmetic surgery, laser skin rejuvenation makes use of concentrated beams of light to restore the skin's youthful glow. Skin tightening, scar reduction, and uneven pigmentation are all possible outcomes. Skin becomes smoother and firmer after laser skin resurfacing because the heat from the laser stimulates the production of new collagen by heating the dermal layer. Fractionated laser resurfacing minimizes downtime by treating a portion of the skin at a time, as opposed to ablative laser resurfacing, which removes the complete outer layer. Possible side effects include skin color changes, scars, and burns. Insurance usually won't pay for it because it's seen as a cosmetic procedure, but the costs can vary.