NON-INVASIVE THERMAGE FOR SKIN TIGHTENING, Thermage is a non-invasive radio frequency therapy that smooths, tightens and contours the skin. This therapy is usually done in 1 treatment and offers remarkable, long lasting results without any down time. Results improve over time with a maintenance program recommended 1 time per year. This technology uses radio frequency to heat the deep layers of collagen that causes the collagen to contract with new collagen growth formed. This gives you a smoother look in just 1 visit.