Wider faces got more second dates
Real speed-dating events: men with a higher facial width-to-height ratio were rated more dominant and more attractive for short-term dating.
4.8 from 2,000+ reviews · 81,000+ satisfied customers
Jaw Toner 3.0 Facial Exerciser
Progressive resistance for the muscle that shapes your jawline.
Pick your level
Save 35%
45-day risk-free trial
Free shipping over
BPA-free silicone
What's included
- Jaw Toner 3.0 device
- Carry case
- Chain
- Jaw Toner User Guide
- 45-Day Risk-Free Trial
How to use
- Seat the strips between your teeth
- Bite down slow, controlled reps to fatigue
- 10 minutes, then rest. Level up when 50 reps feel easy.
Shipping & guarantee
Ships in 24h with tracking. 5–14 days worldwide. Free over . 45-day risk-free trial and damage warranty on everything.
The community
Join the Jaw Toners community
Real people, real training. Tag @jawtoners to get featured.
“the gum is my favorite”
@Vmogsu
“"My cheekbones have started to lift and my jaw has been slimming out"”
Chloe W.
@sub5reid
“Genuinely a 100x harder than regular chewing gum”
Jake Shepard
@strt_mame24
“You can feel the whole side of your face working”
Ryan P.
Angelo
@75Xeno
“Be consistent and it's bound to work”
Kevin Johnar
“Makes you mog”
Aaron L.
“Anti-aging genius product”
Erney
The masseter
Jaw width is a muscle.
The masseter is the thick muscle over your back teeth. It's appearance dictates how wide and defined your face is.
It trains like any other muscle. Six weeks of isometric jaw work raised bite force by 37%. Ordinary gum, six months, three times a day: no change in thickness. The load was too light.
That width is what people read as masculine. At real speed-dating events, men with wider faces were rated more dominant and more attractive for short-term dating.
Why Jaw Toner
Pick your levelFood and gum never load the masseter hard enough to grow it. Jaw Toner starts at 40 lb and climbs to 70. Ten minutes a day, rest days built in.
The research behind it
Thicker masseter, wider jaw
Ultrasound + cephalometry on 80 men: the thicker the masseter, the greater the jaw (intergonial) width and cheekbone width on the same face.
+37% bite force in 6 weeks
28 young adults, five 1-minute isometric jaw clenches a day. The exercise group gained 37%; the control group didn't change.
It grows under load
Randomised trial: six weeks of chewing exercise raised masseter thickness and bite force over baseline, measured on ultrasound.
Regular gum isn't enough
Six months of ordinary gum, three times a day: bite force up, masseter thickness unchanged. The load was too light.
A strong jaw reads as masculine
A prominent jaw outline was the facial shape people rated as dominant and masculine, and it tracked grip strength.
Correlational studies describe associations, not guarantees. We claim muscle adaptation, not bone change. Results vary with consistency and body fat.
Train it like everything else
Step 1
Choose your resistance
Start by picking your resistance level. Each level is printed on the front of the device.
Step 2
Rinse & thread the chain
Rinse it, then feed the chain through the middle of the device.
Step 3
Get comfortable
Chew down on the Jaw Toner for the first time. Place your teeth in between the groove and have a few bites.
Step 4
Bite vertical
For perfect form, wrap your lips around the Jaw Toner and bite straight down.
Step 5
Start training
3–10 sets of 5–30 reps, 1–2 min rest between. Work hard, but stop before any pain.
Deep diveMuscle and bone
Bone answers to the muscle on it.
Once you're past 18, your bones are set in stone, right? Wrong.
Wolff's Law is a principle in biology that says bone gets stronger and denser when more muscle is built on it. The more muscle, the more bone your body builds. Your jaw is no exception.
Your masseter is the main muscle that runs along your jawline. When you chew against resistance, it contracts and pulls directly on the jawbone. Bone isn't static, it's living tissue that constantly rebuilds itself based on the forces acting on it. So when your masseter is stronger, your body responds by adding more bone at those attachment points.
It's the same reason a tennis player's racket arm has thicker bones than their other arm. The muscle works harder, so the bone underneath gets denser. Train your jaw consistently, your masseter grows, it pulls harder on the bone, and the bone builds back thicker. That's how jaw exercise leads to a more defined jawline, not just bigger muscles, but denser bone underneath them.
What loading can and cannot do
Muscle grows in weeks. Bone remodels over months, and it responds most exactly where the muscle attaches. The Jaw Toner loads the masseter at 40 to 70 lb, every rep, on the bone that frames your jawline.
1Load the muscle2Muscle pulls the bone3Osteocytes read the strain4Bone remodels to match
Start loading itThe research behind it
Muscle loads bone harder than gravity
The largest forces a bone ever meets come from muscle contraction, not bodyweight. Bone mass is regulated to keep strain inside a target band.
1,500 to 3,000 microstrain builds bone
Review of muscle-bone crosstalk in the chewing system: strain in that band drives bone modelling, while sustained strain under about 300 triggers resorption.
Bigger muscle, different mandible
Head CT on 382 adults: a larger masseter and temporalis cross-section went with a wider, more trapezoidal ramus and a more rectangular jaw body.
Muscle beat body-wide bone density
In dentate women, masseter thickness and the number of chewing teeth predicted mandibular bone mass and thickness. Whole-skeleton bone density did not.
Weaken the muscle, lose the bone
Twelve months after botulinum toxin weakened the masseter in 77 women, cortical bone density fell at the muscle attachment sites and the condyle.
Bone volume fell 35% without the pull
Four weeks after the chewing muscles were paralysed in adult rats, condylar bone volume dropped 35% and alveolar bone 20%.
Muscle-bone coupling is well established. The jaw-specific human evidence is correlational, plus animal and disuse studies, and one 12-month trial found no density change after masseter botulinum toxin. We claim muscle adaptation and loading, not a new skeleton.
What the research says
+22% bite force in 4 weeks
Resistance chewing, 5 min twice daily
Shirai 2018
Thickness you can measure
Masseter grows measurably under load
Kiliaridis 1991
Potentially denser jawbone
Higher masticatory load is associated with denser jawbone in studies
Theory · research ongoing
Nasal breathing support
Mouth breathers show lower masseter activity. Oropharyngeal muscle training halved sleep-apnoea severity across 9 studies.
Spot-training is real for muscle
You can't target fat loss. You can target a muscle.
We make no claims about bone or facial structure outcomes. Muscles adapt to training; the rest varies by individual.
Frequently Asked Questions
Does it actually work?
The masseter is a muscle. Give it progressive resistance and it adapts like any other. We have thousands of customers to vouch for us. The studies in our numbers section are linked on every product page.
How long until I notice something?
Most people feel the workout on day one. Visible changes depend on consistency and body fat, usually weeks not days.
How often should I train?
Start with a few minutes a day and build to about 15 minutes. Train every other day while you're new, and take rest days like you would for any muscle. Overtraining shows up as jaw ache, so listen to your body and back off if it's sore.
Which resistance should I start with?
New to jaw training? Start on Starter (40 lb · 18 kg). If you chew tough food often, 50 lb or 60 lb will challenge you sooner. Want the full progression? The bundle lets you step up through the levels like adding plates in the gym, and the kit adds the 70 lb Titan.
The resistance is printed on the front of each device.
How long does a Jaw Toner last?
Usually 3 to 6 months, depending on how often you train and how sharp your teeth are. Clean it regularly and use proper form to make it last longer.
How do I clean it?
Rinse it under warm water, scrub gently with mild soap and a soft toothbrush, rinse again and let it air dry. Store it in its case once it's fully dry.
Is it safe for my teeth?
Your teeth are stronger than you think—and we designed around that. Front teeth can handle up to 70 lbs of bite force (our max). But, our design ensures the Jaw Toner spreads the pressure evenly across your jaw, so your teeth aren't taking the full load directly. Add proper form with your lips wrapped and the device centered in your teeth, and you're protected.
Stop if there's pain. If you experience any discomfort while using the Jaw Toner, stop and let the issue resolve before using it again.
Have braces or orthodontic devices? Check with your dentist first. The Jaw Toner isn't compatible with active orthodontic treatment or braces—you'll need clearance before using it.
New to jaw exercise? If you have concerns or a history of jaw issues, check with your orthodontist or dentist before starting.
Can it cause TMJ?
Used correctly and not overdone, a Jaw Toner shouldn't cause jaw problems. Overuse can cause soreness or discomfort, and serious issues like TMJD are very unlikely unless you already have a jaw condition.
If you have TMJ disorder, jaw pain or clicking, check with a professional before using it.
Can I use it with veneers or dentures?
Veneers: usually fine. Ask your dentist if you're unsure.
Dentures: don't use it with removable dentures. Permanent dentures may be fine depending on which teeth they replace, so check with your dentist first.
Is it suitable for children?
No. Jaw Toners are not for children. It can be a choking hazard, and their jaw muscles and bones are still developing.
What is it made from? Any microplastics?
Jaw Toners are made from 100% BPA and phthalate free, food-grade silicone rubber. It's solid rubber, so it doesn't shed microplastics.
When will my order arrive?
Orders ship within 24 hours with tracking. Typical delivery is 5 to 14 days worldwide.
Is my order tracked?
Yes. Every order ships with free tracking. Track your package here.
What if my order gets lost?
You're covered. If your package is lost in transit we'll send a replacement free of charge. Contact us if your tracking hasn't updated in 21 days.
What payment options do you accept?
All major credit and debit cards, plus PayPal, Apple Pay, Google Pay, Shop Pay, Meta Pay and Amazon Pay.
What if it's not for me?
Send it back within 45 days for a full refund. No hoops.