13 07 ultherapy skin tightening collagen treatmentDescription: Ultherapy uses sound waves to improve the look and tightness of skin.

How it’s done: Sound vibrations are pulsed under the surface of the skin to create a reaction that boosts the production of collagen and increases cell growth. The results take up to 90 days to fully come into effect, but can last up to a year.

Complications: Complications are incredibly rare, but burns, loss of volume, and injury to a nerve or blood vessel are possible.

Recovery: None.

Cost: $1,200 per treatment.