Thermage FLX™ uses radiofrequency (RF) energy to treat wrinkles and loose skin without discomfort or downtime. As the handpiece is passed over the treatment site, the RF energy heats the deeper layers of the skin, causing the existing collagen to contract and stimulating the production of new collagen. While some skin tightening treatments may require multiple treatments, you can see results after only one Thermage FLX™ session. You may see some immediate improvement, and your results will continue to improve over time as your body creates more collagen.