Chin dimples only when mouth is closed, will putting Botox in the mentalis muscle make me unable to close my mouth?

It should be fine to receive Botox here, but make sure you only get a low dosage, especially since it's your first time.

Thank you for your question.  Use of Botox on the mentalis muscle in a conservative fashion should not cause any problems with closing your lips.  The nice thing about Botox is you can try a small amount and always titrate up or use additional if you do not get the desired outcome.  Additionally, if you over-treat, it does wear off. Best of luck.

In my experience, treatment of the pebble chin in someone with a small chin does not interfere with closing of the lips. The key, however, is to be conservative. More Botox can always be added but once someone is over treated you cannot remove it. Seek a consultation with an expert physician Botox injector - start with a plastic surgeon or dermatologist in your area. I hope this information is helpful for you.Stephen Weber MD, FACSDenver Facial Plastic Surgeon