Been doing Botox to slim my jaw since 2016 (every 3 months, total 45 units). Initially I used to get crooked smiles but over the years it disappeared while doing the procedure. Last year, I noticed that the slimming effect started reducing compared to earlier years. After the one I got done in November, my jaw slimming almost stopped. I got another one done in March. I feel weakness in my jaws while clenching but no slimming effects at all. What could be happening and how can I get this resolved
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