Jawline contouring using anti-wrinkle injections is a highly specialized structural treatment that targets the masseter muscles. These are the strong muscles located at the angle of your lower jaw, primarily responsible for chewing. For many patients, stress, chronic teeth grinding (bruxism), or natural genetics can cause these muscles to become overworked and physically enlarged, a condition known as masseter hypertrophy.

When the masseters enlarge, they widen the lower face, creating a heavy, square, or overly masculine jawline. By injecting precise doses of prescription medication directly into the bulk of the muscle, your clinician can safely reduce its activity. As the muscle relaxes over the following weeks, it naturally shrinks in size. This gracefully tapers the lower face, restoring a softer, elegant heart-shaped or V-line contour while providing significant medical relief from jaw clenching.

Unlike treatments that require multiple injection sites across the face, this procedure is highly focused on one specific anatomical structure:

• The Masseter Muscles: The deep, powerful chewing muscles situated at the rear angles of the jawline, just below the cheekbones and in front of the ears. Your clinician will meticulously isolate the exact bulk of the muscle to ensure the surrounding structures are completely unaffected.

• Facial Slimming: Visibly reduces the width of the lower face by shrinking bulky masseter muscles, creating a softer, more refined profile.
• Tension Relief: Highly effective at treating bruxism by stopping the involuntary teeth grinding and clenching that occurs during sleep.
• Alleviates Headaches: Reduces the chronic tension headaches and jaw ache associated with an overworked masseter muscle.
• Non-Surgical Reshaping: Provides dramatic structural contouring to the face without the need for invasive jaw surgery or downtime.

To ensure a safe and effective procedure, please arrive at the clinic completely makeup-free with a clean face.

Upon your arrival, your clinician will thoroughly cleanse the lower cheeks and jawline. Because the masseter is a deep muscle, the injections are performed using a slightly longer but ultra-fine needle. The procedure is typically very comfortable, but depending on your preference, we may apply a topical anesthetic cream or a cold compress prior to the injections.

Your clinician will ask you to firmly clench and un-clench your teeth several times. This allows them to physically palpate the borders of your masseter muscle and map out the precise injection points. The product is then delivered deeply into the muscle belly to ensure maximum efficacy and safety.

Immediately following the procedure, the injection sites may appear as tiny red marks, which will naturally fade within the hour. You will not feel any immediate change in your ability to chew.

• The First 4 Hours: Please remain upright and avoid lying down flat or bending over to ensure the medication settles exactly where it was placed.
• The First 24 Hours: Do not firmly rub or massage your jawline. You must avoid applying makeup to prevent infection. Avoid intensive cardiovascular exercise, saunas, steam rooms, and hot showers for 24 hours following your appointment.
• Dietary Adjustments: To allow the muscle to relax effectively, avoid excessively chewy or tough foods (such as chewing gum, tough steaks, or hard sweets) for the first few days post-treatment.

The timeline for masseter treatments differs from standard anti-wrinkle injections. While you will likely feel relief from jaw tension and grinding within 10 to 14 days, the physical muscle takes time to atrophy and shrink. Maximal and optimum visual slimming results will become visible around 4 weeks post-treatment.