Kybella is a prescription medication used in adults to improve the appearance and profile of moderate to severe fat below the chin (submental fat), also called “double chin.” The process uses a series of deoxycholic acid injections to target the fat cells in this area. No incisions are required. Deoxycholic acid is a bile acid, naturally produced by the body to help absorb fat. Kybella is a synthetic form of deoxycholic acid. Once injected, the medication destroys fat cells beneath the chin area so to reduce double chin.