Radio frequency skin tightening (RF) is an aesthetic technique that uses RF energy to heat tissue and stimulate subdermal collagen production in order to reduce the appearance of fine lines and loose skin. The technique induces tissue remodeling and production of new collagen and elastin. The process provides an alternative to facelift and other cosmetic surgeries. Several companies manufacture RF devices, including Thermage by Solta Medical, Venus Freeze by Venus Concept, VelaShape by Syneron, Exilis by BTL, and 3DEEP by Endymed. Alternative techniques include Laser Resurfacing and certain Ultrasound alternatives.