Jawline Botox

Jaw (masseter) botox places a small dose of toxin into the masseter — the muscle used to chew — so an over-developed muscle gradually slims and the jawline looks softer from the front. The injection takes about 10 minutes with little disruption to daily life. Much like a bicep that shrinks when you stop working it out, easing the daily workload of the jaw muscle lets an over-developed masseter settle over a few weeks.

1. Assessment: with the patient clenching their teeth, the doctor checks the masseter by feel (palpation) to confirm its thickness, left-right symmetry, and the thickest point, then plans the appropriate dose and injection points based on the cause of the muscle development. 2. Mapping: injection points are planned about 1.5-2 cm above the angle of the jaw, distributed across the thickest area on each side, positioned to avoid affecting the smile or cheek (reducing the chance of a temporary cheek bulge when smiling). 3. Cleansing & injection: after wiping the skin with alcohol, a measured dose is delivered into the muscle (intramuscularly) with a fine needle. The sensation is typically a brief pinprick, and Jaw Botox is usually performed without separate anesthesia. 4. Finish: patients receive aftercare guidance; washing the face and applying makeup are generally fine after 2-3 hours. Total time about 10 minutes.

Botulinum toxin begins acting around 2-3 days after injection, becomes clearly noticeable at about 2 weeks, and for the masseter the change typically settles over roughly 2-4 weeks as the muscle is used less. The visible softening of the jawline appears gradually rather than instantly. Duration varies with individual muscle mass and habits but is generally around 4-6 months; to keep the shape stable, a repeat treatment is commonly planned roughly every 3-6 months. Results and longevity differ between individuals and are not permanent — muscle function returns as the nerve signaling recovers.

Treatment may be restricted during pregnancy or breastfeeding, in the case of neuromuscular disorders such as myasthenia gravis or Lambert-Eaton syndrome, or when there is active infection in the treatment area. If you have experienced an allergic or hypersensitivity reaction to botulinum toxin or its components, or are taking anticoagulants, antiplatelet agents, or other medication that can affect bleeding, please inform the medical team before treatment. Please also be sure to inform us if you are using medication that can affect neuromuscular transmission, such as aminoglycoside antibiotics. Immediately after treatment, redness, swelling, stinging, or bruising may appear at the injection sites, and in most cases these gradually settle over time. As movement of the masseter muscle decreases, chewing strength may temporarily weaken or the jaw may tire easily. During the period of discomfort, reducing tough or hard foods may help. Rarely, after treatment part of the masseter may look relatively prominent or bulge when the muscle is tensed. This usually improves with observation over time, but if it persists or is noticeable, the medical team assesses the condition and determines whether additional correction is needed. On the day of treatment, do not rub or massage the treated area vigorously, and it is best to avoid activities that increase blood flow and body temperature, such as vigorous exercise, saunas, hot compresses, hot baths, and alcohol.