The excess of fat under the chin is the cause of the double chin. Knowing the origin of the problem may be helpful to find the right treatment to treat the double chin itself. Here are some examples:
Age – As we age, our skin loses its elasticity and leads to saggy skin under the chin area.
Diet and weight – Gaining weight is undeniably a cause of excess of fat in the chin area.
Genetics – Some individuals have firmer skin than others. It could be a family history.
Posture – Sometimes it is just the way you position your head, neck and body. Bad body position can weaken the muscles. In this case, simple muscle exercises can help.