The area below the chin on the forward neck holds fat deposits that don't tend to respond to diet and exercise the way fat around the stomach acts. Once the fat is reduced with CoolMini, the applicator of CoolSculpting, by its freezing technique that kills those fat cells, the fat tends to remain gone. As CoolSculpting of the double chin has been done for the last year in our practice, we can extrapolate the results of liposuction of the neck which has been done for many years. Patients that have fat removed from this area rarely gain more fat once it is reduced.The information provided in Dr. Shelton's answer is for educational purposes only and is not intended to constitute medical advice. The information provided should not be relied upon as a substitute for consultations with a qualified health professional who may be familiar with your individual medical needs.