Belkyra, known as Kybella in the United States, is an injectable treatment designed to reduce submental fullness, commonly referred to as a “double chin.” The active ingredient in Belkyra is deoxycholic acid, a naturally occurring molecule in the body that aids in the breakdown and absorption of dietary fat. When injected into the fat beneath the chin, Belkyra destroys fat cells, resulting in a noticeable reduction in fullness and an improved chin profile.