Plain and simple, laser skin tightening is the tightening of the skin on the face, neck, or body using good old fashioned heat. 

“After the age of 30, we slow down our production of collagen and elastin—the two proteins that help our skin stay firm, plump, and toned,” she explains. “What non-surgical skin tightening with lasers does is target energy in the layers of the skin to stimulate that collagen and elastin production, which will gradually improve the texture and tone.”

Ahead, hear more from Nussbaum on how it works, how long it takes, how much it costs, and whether or not tightening hurts.

Lasers can tighten skin almost anywhere on the body.

Lasers can treat loose skin on the face, neck (and chin), décolletage, stomach, thighs, and basically anywhere else on the body you want to improve. Not all lasers are made equal though—what might work magic on the butt isn’t going to be the best option for tightening your undereye area.