How to Reduce a Square Jaw Without Surgery

A square jaw is often admired for its bold, well-defined appearance—broad at the sides and sharply contoured at the angles. But that chiseled shape isn’t always just a matter of bone. In many cases, it’s the masseter muscle—the strong chewing muscle located near the back of the jaw—that contributes to a wider lower face. When this muscle becomes enlarged, it can create a more prominent, angular look. Sometimes, it’s the jawbone itself that adds to the square shape, especially when there’s extra bone growth along the lower border. While many people appreciate the strength and structure a square jawline can bring, it’s not always a feature that feels flattering. For some, the width can overshadow other facial features, making the face appear heavier or more severe.

At the Aesthetic Associates Centre, we can help you achieve a more refined, balanced facial profile. Using advanced techniques tailored to your unique features, we focus on subtle enhancements that bring softness and symmetry—without changing what makes you, you.

Understanding the Shape of Your Jawline

If you’ve ever looked in the mirror and wondered why your jawline appears broad or angular, the answer often starts with something you can’t control: genetics. Just like your height, eye color, or the shape of your nose, the structure of your jaw is largely inherited. Your DNA helps determine the size, shape, and angles of your jawbones, which means a square jaw can simply run in the family.

But genetics isn’t the whole story.

Your daily habits and lifestyle can also influence the shape of your jaw over time. One major player is the masseter muscle. This thick, powerful muscle near the back of your jaw helps you chew. When this muscle gets used a lot—through activities like chewing tough foods, grinding your teeth at night, or clenching your jaw during stress—it can grow larger.

Interestingly, this muscle enlargement can happen on one side or both, sometimes developing without a clear cause. While it’s usually harmless and doesn’t cause physical symptoms, it can change how your face looks—leading some people to feel that their jawline appears too square or unbalanced.

Square Jaw Reduction With Botox®

Botox® is the brand name for a medication made from a purified form of botulinum toxin. It works by blocking the release of a chemical messenger called acetylcholine, which your nerves use to tell muscles to contract. When we inject Botox into a muscle, it temporarily reduces that muscle’s activity.

In the case of a square jaw, we precisely inject Botox into the masseter muscles. This blocks the nerve signals that trigger constant clenching and movement. The muscle gradually shrinks with less activity—a natural process called muscle atrophy. Over time, this leads to a slimmer, softer jawline.

The change isn’t immediate, but it’s steady and noticeable. Most people begin to see results within a few weeks, with continued refinement over the next two to three months. Because it’s a non-surgical, minimally invasive procedure, there’s little to no downtime. We also adjust the number of injection points and dose to match your unique facial structure and goals.

By selectively relaxing just one set of muscles, we can subtly reshape the lower face. The result is a more balanced profile and a naturally refined jawline.

How We Use Fillers To Reshape a Square Jaw

We also use dermal fillers to help refine a square or angular jawline. These fillers are smooth, gel-like substances that we inject beneath the skin to sculpt and contour specific areas of the face.

Most of the time, we use hyaluronic acid-based fillers, like Juvederm® or Restylane®. Hyaluronic acid is a substance your body naturally produces to keep skin hydrated and plump. When we place it strategically in the lower face, it allows us to subtly reshape your features and soften sharper angles.

We begin by carefully assessing your facial structure. If your jawline feels too square or broad for your liking, we can add volume in key areas—often the chin, the jawline just in front of the ear, or along the mandibular angle. This lets us guide the overall shape of the lower face into something more balanced and refined.

By building structure in the right places, we help create smoother transitions between your jaw, chin, and neck. This can reduce the visual heaviness of a square jaw and bring out more oval or heart-shaped contours.

Are You Ready To Refine Your Jawline?

Do you want to soften a strong jaw or bring more balance to your facial features? Our team at the Aesthetic Associates Centre is here to help. With advanced, non-surgical treatments like Botox® and dermal fillers, we can tailor a plan that enhances your natural contours.

Schedule a consultation today to learn how we can help you achieve a more refined, confident profile.

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