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Botox
What are the effects of chin Botox when used long-term?
Botox is a good option to relax the chin muscle and reduce the "cobblestone" or "pebbly" appearance without significant long-term side effects. The mentalis muscle is not very bulky and atrophy of this muscle likely will not result in significant changes in chin contour at rest. Additionally, you can always discontinue your Botox treatments and the muscle activity will return.
Clinical Context
The main trade-off with repeated chin Botox is that softening the mentalis muscle over years can subtly change chin contour or lower lip support, since this small muscle helps stabilize lip position during speech and swallowing. These changes are generally mild and reversible once injections stop, as normal nerve signaling and muscle activity return. The muscle doesn't weaken permanently between sessions, but inconsistent dosing or injection placement over time can lead to uneven texture or dimpling if not monitored.
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