The Thermage face lift procedure uses RF technology, which heats the deep, collagen-rich layers of the skin. As the heat is applied, it separates the water molecules from collagen thereby resulting in skin tightening. Your skin begins to tighten immediately as a result of this deep uniform heating action. A younger, healthier appearance is achieved due to the production of remodelled collagen over time, which leads to even tighter and more elastic skin.