There is no doubt that Botox injections can effectively reduce the appearance of large masseter muscles and substantial clinical experience has substantiated this effect. But quantitative assessment of the amount of muscular reduction and its long-term results are less available. Side effects of masseter Botox. As with any type of Botox treatment, side effects are possible. The most common ones are mild discomfort at the injection site including: Bruising; Pain; Redness; Swelling ; However, due to the location, there are also additional side effects specific to masseter Botox including: Can masseter Botox have negative side effects? Search masseter Botox on TikTok, and you'll find plenty of videos praising the results… and plenty warning of bizarre side effects , including worsened jaw clenching, a lopsided smile, and an inability to chew. Masseter Botox is a safe and common procedure, but there are certain side effects users should be aware of, including: Pain and bruising at the injection site Headache Nausea Flu symptoms Temporary facial drooping or weakness You will notice a slimmer jawline when the masseter muscles begin to atrophy and relax. Common side effects of BOTOX include mild redness, soreness, and bruising at the injection sites. Others may experience muscle pain. These effects are temporary and can be alleviated with a cool compress or over-the-counter medication. This large muscle is responsible for chewing and clenching the jaw, but when it becomes overworked or enlarged due to teeth grinding, stress, or other factors, it can cause pain, headaches, and even a wider-looking face because it makes your jaw muscles larger. .

side effects of masseter botox