Have a "double chin?" Want more neck and jawline definition? Dr. Kosann, Dr. Levine, and Dr. Lederhandler administer Kybella® to patients who have fullness under the chin. This area on the front of the neck, known as "submental fullness," is treated to reduce the fat and improve the profile and contour of the area. Call for a consultation to see if this simple, in-office procedure is a good fit for you. Popular with both men and women, Kybella® is a non-surgical way to reduce fullness on the neck.