A double chin, also known as submental fat, is a common cosmetic concern characterized by the accumulation of excess fat under the chin and jawline, resulting in a noticeable fold or sagging appearance.
While it is often associated with weight gain and aging, genetics and facial structure can also play a role in its development. Many individuals find a double chin to be bothersome, as it can contribute to a less-defined jawline and diminish overall facial aesthetics.