Will Botox Tighten Double Chin?

Double chin is from excessive fat and the only good solution is liposuction. Botox will not help because it only causes muscles to relax. Relaxing the muscle under the chin will only make the double chin look worst.
Regards

Botox works by not letting the muscles under the skin move.  This then improves the wrinkle above.  Double chins are usually a combination of excess soft tissue, (skin, fat)and sometimes hard tissue, (bone).  Botox is usually not effective for these issues.

Unfortunately, Botox will not work for your condition.  Botox works by relaxing muscles that cause wrinkles.  A double chin is not caused by muscle contraction but rather by excess skin and fatty tissue.  You would be better served talking to a facial plastic surgeon about some liposuction and/or a neck lift.  Good luck.

Botox will not tighten a double chin but it may relax a "turkey neck" especially if due to muscles that tighten when you speak. A double chin is generally attributable to loose skin and localized fat and made worse by loss of bone density/volume of the mandible. Botulinum toxin does not treat these components.

A double chin is most likely due to excess skin and fat in the chin and neck regions. It is for these reasons that Botox will most likely not help as it treats lines caused by overactive muscles. Instead, you may want to consider liposuction and/or a neck lift depending on your aesthetic goals. If you have tight muscles in the neck causing "bands" to form, than Botox is good for treating this as it will paralyze the platysma muscle that can cause these bands. Good luck!