What happens if I gain weight after using ‪Kybella‬ for a double chin?

The effects of deoxycholic acid are permanent. Once the fat cells are destroyed, they do not come back. If you gain weight after receiving deoxycholic acid injections then the fat will be redistributed to other areas. However, this will likely not be clinically apparent since the amount of fat dissolved in the submental area is a small volume compared to areas such as the abdomen or flanks.