|A common concern amongst both men and women, fullness under the chin can be caused by a multitude of factors including ageing, genetics and weight fluctuations. Sometimes, no matter how much you diet or exercise, the fullness in this area may not go away. Injections of deoxycholic acid, an active and naturally occurring ingredient, have been approved by the TGA and FDA to safely and effectively breakdown fat. This non-surgical treatment targets stubborn fat deposits on the jaw, chin and neck, resulting in a more contoured neck profile and jawline. Your doctor will customise your treatment to your individual anatomy for optimal results.