Thermage is a non-invasive radiofrequency (RF) therapy that can help smooth, tighten and contour skin for an overall younger-looking appearance. It works by heating deep collagen fibers in the skin and underlying tissue that tightens the skin immediately while protecting its surface. Over time, new and remodeled collagen is produced to further tighten skin and renew skin contours. This treatment can be performed in a single session with no downtime.