“Double chin” is a term that refers to the layer of subcutaneous fat around the neck that sags down, creating a wrinkle, which gives the appearance of a second chin. This common condition can result from several factors, including genetics, weight gain, and aging. As we age, our skin loses elasticity, and the production of structural proteins such as collagen and elastin diminishes, leading to a less defined jawline and the emergence of a double chin. Additionally, lifestyle factors like poor diet, lack of exercise, and smoking can contribute to the weakening of the muscles in the area, exacerbating the effect. While it’s a natural part of aging, specific exercises and cosmetic procedures can help minimize its appearance.