Can Kybella make your double chin larger?

Kybella is a FDA approved drug developed from deoxycholic acid that can effectively destroy fat cells, when injected under the chin. This aesthetic breakthrough is designed to reduce and refine the appearance of a double chin. It may take 2-4 treatments spaced 6-8 weeks apart,
to achieve the best result. The most common side effects are temporary burning, redness, swelling & numbness that can occur post injection. Swelling will generally peak around 3 - 4 days and reduce within 10 - 14 days. This tends to be more prominent when there is a large amount of fat and if it is your first time being treated. It appears you are likely in the peak of your swelling.  The numbness and swelling usually resolves after 2-6 weeks. We recommend avoiding any medication such as aspirin, ibuprofen or fish oil 10 days prior to treatment and after treatment if possible. This seems to help with skin tightening.
For more information on this question there is a video below. Hope this assists you on your journey, best of luck with the recovery!
Dr. Anil Rajani, MD

Most patients will have some swelling after Kybella injections that can last for one to two weeks. In some cases, swelling lasts longer. This is probably what is going on in your situation. I haven't seen any instances of anyone developing a larger chin after Kybella. If your swelling doesn't resolve after a few more days, you may be having an inflammatory reaction. Consulting your board-certified dermatologist will give you a better idea if your healing is on track or if are having a reaction. It takes about 6-8 weeks or more to see Kybella's slimming effects.

Thank you for your question. At only 2 weeks after a Kybella injection, there is still a massive amount of swelling and inflammation going on and it can feel quite odd and even seem like it is worse. It can often take 6-8 weeks for the swelling and numbness to fully resolve. The Kybella did not make your chin larger, it is just doing what it is supposed to do and this is completely normal and should have been discussed with you prior to injection. Be patient.Hope this helps!