Hello and thank you for your question. ThermiTight and BodyTite both use radio frequency energy to firm and tighten the skin, however, the treatments do differ somewhat. ThermiTight works primarily by activating existing collagen in the skin, and encouraging the formation of new collagen. The increased collagen in the skin minimizes skin laxity and increases skin tone. BodyTite achieves the same goals as ThermiTight, but also eliminates fat. Which procedure will best meet your needs depends on several factors, including the present condition of your skin as well as the amount of skin tightening and fat reduction you desire. Depending on your needs and goals, your doctor may recommend performing multiple procedures in combination — including liposuction — to give you the best possible result. I hope this information helps. For more details and a personalized recommendation, contact a local, board-certified cosmetic practitioner in your area. Good luck with your procedure! - Carl N. Williams, Jr., MD