There is a vertical line on the chin. What line is it called?

Mandibular line Mandibular line mainly includes the edge of facial contour and belongs to arc shape. If the jaw line at the chin is slack or there are symptoms of double chin, it can be improved by face-lifting surgery, and the double chin can return to normal. Usually pay attention to diet control, avoid eating high-fat foods, and do a good job of skin care. We need to have our skin done regularly.