How to get rid of double chin involves a combination of lifestyle changes and targeted exercises. Firstly, maintaining a healthy weight through proper diet and regular exercise can reduce overall body fat, including the fat around the chin area. Additionally, specific exercises such as chin lifts, neck stretches, and jaw exercises can help tone and tighten the muscles in the chin and neck area. Non-surgical treatments like Kybella injections or CoolSculpting can also target and reduce fat under the chin. Finally, maintaining good posture and avoiding habits like slouching can help prevent the appearance of a double chin.