Kybella is an injectable that an increasing number of aesthetic providers are using to help remove fat underneath their neck. Commonly referred to as a double chin, this area of submental fat can also result in a sagging turkey neck. Kybella is quickly becoming the most popular substitute for surgery to remove chin fat, and for good reason. Its primary ingredient is deoxycholic acid, which is a type of acid that naturally occurs inside the body to breakdown and absorb fat. Kybella injections melt submental fat in the chin, neck and bra areas with concentrated amounts of deoxycholic acid. Deoxycholic acid then assists in breaking down and removing neck, chin and bra fat, alleviating the look of sagging skin.