Belkyra injections break down the cell membrane of the adipocyte cells that cause double chin. When the cell membrane of the fat cell is broken, the contents of the fat cell, glycerol, and free fatty acids leak out into the surrounding subcutaneous space. The contents that leak out are harmless and the body has a huge capacity for naturally removing free fatty acids and glycerol in a safe and effective manner. The fat is metabolised and removed via the liver and kidneys.