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Jaw botox relaxes and reduces the size of the masseter muscle. The masseter muscles may enlarge due to excessive chewing (gum) as well as bruxism (teeth clenching)

Besides jawline slimming, masseter botox also reduces

Botox is traditionally a cosmetic treatment for lines and wrinkles. However, it has a long history of medically therapeutic uses such as jawline botox for face slimming.


How it works?

Muscle contraction happens when nerves release a neurotransmitter (acetylcholine) onto muscle cells, causing those cells to contract. When Botox® is injected into a muscle, the release of acetylcholine from the nerves stimulating that muscle is prevented.

The muscle contractions are weakened, preventing the masseter muscle from contracting so much. Following the first treatment, the masseter muscle will atrophy (waste away slightly). This will result in the jaw line becoming more ‘v-shaped’ and less square.

A side effect is that you will experience a reduction in jaw clenching and/or teeth grinding.

Who is suitable?
  • If you are self-conscious about having an overly square jaw, masseter muscle Botox® may be a potential treatment to narrow your jawline and produce a more v-shaped lower face.

  • Additionally, teeth grinding, and jaw clenching will also be reduced.

Side effects & risks

Some side effects include:

  • Temporary bleeding/bruising

  • Mild swelling

  • Post-treatment headache


More serious side effects can occur for treatment of other areas (e.g. double vision, drooping lip, difficulty swallowing or breathing, change of voice or difficulty pronouncing some words.

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