The masseters are a set of muscles that span the mid to lower face, whose responsibility is chewing. People with strong masseter muscles may have a wide square face, that might be undesirable for them. Neurotoxin injection is used to reduce the masseter muscle to shape the face, and this is the only non-surgical treatment for this purpose. This treatment is also a cure for teeth grinding.
Masseter reduction treatment involves a couple of injections to each cheek and often a follow up treatment is required to be performed in about one or two months to ensure the best results. It is noteworthy that face slimming is not recommended for people with moderate jowls or thick neck.