What Works (and What Doesn't) to Improve Your Jawline

FAQ

In looksmaxxing culture, the jawline is often the most discussed feature, and for good reason. Research shows that a strong jawline is one of the most attractive traits for a man, and it is seen as a sign of good genes and a masculine build.

Unfortunately, the wealth of information online regarding jawlines is misleading. Exercises to strengthen the jawline do not work, chewing gum is not a solution, and bone restructuring is not possible through mewing in 90 days.

This guide is a breakdown of the anatomy of the jawline, what surgical options could be considered, and what actually works and what doesn't.

Why jawlines add to facial attractiveness

It is important to understand why a jawline is important to many before moving to the next step.

The jawline is one of the most sexually dimorphic horizontal traits in the face. This means that it is one of the most obvious and distinct horizontal traits that differ between the two sexes. This is attributed to the male hormone, testosterone.

Scientific research shows that people with strong jaws usually have:

• A high concentration of testosterone as they develop
• A thick, strong bone structure
• Low body fat
• Good, optimal genetics, health, and fitness

In the PSL rating system, strong jaws and strong chins are very highly weighted. Weak or undefined jaws can significantly lower the attractiveness of a face. A strong jaw improves the attractiveness of all other surrounding features, especially if the jaw is sharp.

These are the reasons why jawline improvement is one of the most searched looksmaxxing topics.

How jawlines are formed

Bone structure, masseter size, and skin covering is what determines a jawline.

1. Bone structure

Bone structure is one of the major anatomy and gene factors that people usually cannot change but it can have major impact. Take for example the gonial angle. The gonial angle is a jaw anatomy term that describes the angle located on the jaw's posterior portion where the horizontal and vertical parts meet. A more acute gonial angle creates a sharper, more defined jaw. An obtuse gonial angle creates a rounder appearance.

This kind of change is usually ignored, especially with jawline improvement.

2. The size of the masseter

The masseter muscle of the jaw is what gives it the physical dimension and mass on the sides of the jaw and is what gives it the major definition where the masseter muscle is located. The masseter muscle helps the jaw control and process food when chewing and also enhances the jaw structure.

3. Body fat

Fat on your face, in particular submental fat and jaw fat, mean that you won't see your full bone structure or musculature. This is one of the most important, and most common, problems people have. Getting lean reveals your jaw.

What actually works

Body fat reduction has the best ROI in most situations

If you do nothing else on this list, do this. This is the most impactful thing you can do for your jawline. The best part is that the only thing it really requires is your discipline.

Your face tends to gain fat in the same places. The submental area and the lower cheeks are where your face holds the most fat and where your jaw definition is most obscured.

Getting your body fat to around 12–15% reveals your jaw. Many guys assume they have a weak jaw, but they actually don't — once the fat is gone, the jaw shows up.

In the coming weeks, track your body fat and jawline every 4–6 weeks. Mogged's facial analysis will show you how your jaw score changes with improved body composition.

Masseter development

Like all muscles, masseters respond to resistance training. The best options include:

• Mastic gum — this is by far the hardest gum, and the resistance provided to the masseters is meaningful. Masseter hypertrophy can be achieved over several months with this gum, which makes this option the best non-surgical option for increasing the width and definition of the jaw. This option has the most evidence of any non-surgical method.
• Regular chewing gum — resistance is still present, but nowhere near the level that mastic gum provides. It is still somewhat of an option, but it is largely less effective than mastic gum.
• Jaw trainers — these are silicone mouth guards used for jaw resistance training. There is conflicting evidence on these. Some users claim to see results, but the level of resistance and consistency plays a big part. If you use one, make sure that you use it daily and pick one that provides a good amount of resistance.

These are the results one can realistically expect after 3 to 6 months of consistent masseter training. It is a slow process, but it is real and free.

Neck training

A thick, developed neck will change how a jaw is perceived, and it will do that most in profile or three-quarter views.

These two areas form a visual unit. A neck that looks weak and thin makes the jawline look softer, whereas a muscular neck makes the jaw sharper and more defined.

Let's first look at neck size. Your neck is one of the first places the body adds fat to when gaining weight. Hoping to look good for summer? Want to take that Instagram photo without the dreaded double chin? Your neck size will positively correlate with the overall visual balance of your physique. A fat neck is almost always accompanied by a poor jawline.

The good news is that, as a cosmetic concern, neck fat is one of the most easily remedied problems. All you need to add is a few neck-specific exercises a few times a week to your normal training regimen. The recommendation is at least three times a week for neck training. In only 8 to 12 weeks, neck training will yield results for both neck size and jawline definition.

Posture and forward head position

One of the most underrated and least acknowledged societal problems is the forward head position — when the head protrudes and juts forward past the shoulders.

Posture is one of the most immediate and effective ways to remedy this. The chin tuck position is one of the most jaw and neck defining postures you can adopt. Ears above shoulders and a chin tuck to lengthen the neck. In this position, the overall facial structure is aesthetically improved.

Jawline definition and the chin tuck position go hand in hand. Throughout the day, practice the chin tuck as an exercise. An effective exercise to remedy rounded shoulders is face pulls. People with good posture severely underestimate the value a chin tuck and face pulls can have on overall jawline aesthetics.

Skincare and jawline definition

Skin quality and jawline definition have a positive correlation. Loose, poor-quality skin softens jaw definition even when the underlying structure is good.

Retinol used consistently over 6–12 months improves skin elasticity and firmness. SPF prevents the collagen breakdown that causes skin laxity over time. Staying well hydrated and avoiding chronic alcohol use prevents the puffiness and poor skin quality that softens jaw definition.

While these changes seem small when looking at body fat and masseter training, they do accumulate when combined with everything else.

What doesn't work

• Jawline exercises (the viral kind). Videos showing specific facial exercises to "slim and define" the jaw are largely ineffective. The muscles targeted by these exercises are small and don't produce meaningful visible change. You cannot spot-reduce fat through facial exercises. Save your time.
• Regular chewing gum. Marketed constantly as a jawline solution. The resistance is too low to produce meaningful masseter hypertrophy in most people. Switch to mastic gum if you want real results.
• Mewing as a short-term fix. Mewing — correct tongue posture pressing against the palate — may have very gradual structural effects over years of consistent practice during development. It will not reshape your jaw in 6 months as a grown adult. Anyone claiming dramatic mewing results in under a year is either very young, exaggerating, or selling something.
• Most "jawline defining" tools and gadgets. Roller tools, electrical stimulation devices, compression masks — minimal to no evidence any of these produce meaningful jaw definition. Skip them.

Hardmaxxing the jawline — when surgery makes sense

For men who have genuinely optimized everything above and still want more, surgical options exist and are legitimate.

Jaw implants

Custom jaw implants can increase jaw width, enhance the gonial angle, and add projection to the chin and jaw corners. This is a significant surgical procedure with real risks including infection, implant displacement, and nerve damage. Results when done well by an experienced surgeon can be dramatic.

Genioplasty (chin surgery)

All-in-all, this surgery involves repositioning the chin bone. This can be done for the chin to move backward, forward, or vertically to improve the proportions of the face. A forward chin improves the definition of the jaw and the aesthetics of the profile.

Chin implants

Chin implants add chin projection, which is less invasive than genioplasty. This is one of the more common procedures involving facial implants, and has a relatively lower risk compared to jaw implants.

Kybella / CoolSculpting for submental fat

Kybella is an injection to dissolve the fat and CoolSculpting uses cold to achieve the same results. Both help with submental fat for patients who have gone through weight loss but still have fat under the chin. Compared to the surgical options, the risk is much lower, but the results are modest.

Some procedures should be a last resort and should be done after you have exhausted all softmaxxing options. Look at your surgeon options carefully because jaw and chin surgery is a complex area and there is a chance of irreversibly messing things up.

How to assess your jawline accurately

Self-assessment of jawlines is a tough task, because of the disparate results. People can be a bit more biased, throwing in lighting or angles in the mixture. People can either underestimate or overestimate jaw definition.

Jaw assessment is one of the many things consistent photography and AI facial analysis can help with, including improvement tracking. Neutral lighting, neutral expression, front and profile shots are the best. Consistency is key. Mogged examines jaw score as part of a full facial analysis and gives you an exact score and cites what is holding your jaw rating down.

A plan that actually works for jawline development

Here's what most should prioritize first:

1. Get lean first — nothing else matters as much as body fat percentage. Get to 12–15% before assessing anything else.
2. Fix your posture — immediate, free, and very significant change.
3. Start neck training — 2–3x per week, you will see results in 8–12 weeks.
4. Switch to mastic gum — daily use, you will see results in 3–6 months.
5. Optimize your skincare — use retinol and SPF, this will take a long time to show results.
6. Now reassess — use Mogged to track your jaw score as you implement each step.
7. Consider surgical options — only after exhausting everything above.

The fundamentals are what get results first, and that applies to most. Getting lean, training your neck, and improving posture are essential and usually free measures that you should take before anything else.

Summary

To summarize, jawline development first and foremost comes down to fat, bone structure, and masseter size. Structure cannot be altered through lifestyle alone, but masseter, fat, and posture development can yield significant results.

To set out on this journey, you first need to assess your jaw as it stands now. Mogged provides this assessment as part of full facial analytics, tracking your results after you've implemented changes to your jaw and face.