Kybella (deoxycholic acid) is a injection that targets fat cells and eliminates them permanently. The fat cells disintegrate and are absorbed by the body over 6-12 weeks.
Since the injections cause the fat cells to die, they are no longer able to store fat. As such, the results you get from your injections should be permanent in most instances.
Many people wonder if Kybella could be used to treat other pockets of stubborn body fat, but for now, the FDA has approved it only for use on a double chin.