Hi and thank you for your question! While Kybella is primarily used for excessive fat under the chin, in some patients it might also be used to reduce fat extending to the jawline or jowls. Injection of Botox for jaw slimming (or treatment of TMJ/bruxism) is done into the masseter muscle and hence the site of injection is distinct from the site of injection of Kybella and they are not expected to directly interfere with each other. I hope it helps and good luck!
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