The Thermage skin tightening treatment uses radiofrequency technology to heat the existing collagen in your skin, causing it to contract. This dermal contraction works to tighten and contour the treatment area . Thermage has a unique cooling sensation feature to keep you completely comfortable during the procedure. While the treatment tip heats the underlying layers of the skin, it simultaneously cools the surface of the skin. This not only keeps you comfortable throughout the procedure but also protects your outer skin layers from any damage.