Does JAWZRSIZE Work? – Find Out About the Unspoken Side Effects

  • by Matt Phelps

It's the Best-Known Brand in the Space... But Jawzrsize Doesn't Even Make the Top 10


Table of Contents 

 🎬 Introduction
 💪 Does Jawzrsize Build the Jaw Muscles?
 🏃🏽‍♂️ Does Jawzrsize Slim Your Face?
 👱🏾‍♀️ Does Jawzrsize Regrow Your Hair?
 🤩 Does Jawzrsize Remove Wrinkles?
 🌸 Which Jawzrsize Claims are True?
 ⛔️ Why Jawzrsize is Dangerous
 ✅ 3 Healthy Jawzrsize Alternatives
 🏁 Summary



We all want a chiseled jawline, hollow cheeks and a more angular face. But probably not enough to get cosmetic surgery. That's why tools like Jawzrsize were created – a cheaper, natural way to improve your appearance.

   I'm a proponent of the main idea behind Jawzrsize: "you workout every other muscle in your body, so why not your face"?

   The idea that you can improve your appearance by building your jaw muscles is new to the mainstream, but Bodybuilders have been doing it for decades.

   I agree that some of the things Jawzrsize claim to be possible, are actually possible. But I don't think the device actually achieves them.

   The equipment falls short of its main claims. And some of their secondary claims ("even re-grow your hair!") are just plain stupid. Let's go into more detail 👇


Jawzrsize owner Brandon Harris

Jawzrsize owner Brandon Harris claims it works




Does Jawzrsize Build Your Jaw Muscles?

To some extent... yes. Jawzrsize will workout your masseter aka your "jawline muscles".

   But it works out another muscle much more – the temporalis. And that's the main issue I have with the effectiveness (more issues with health below) of Jawzrsize.

   The temporalis is a big round muscle on the side of your head. A larger temporalis (believe me, it can really grow) makes your head rounder.  Which also detracts from the visual illusion of a wider jaw.

   In this sense, Jawzrsize doesn't improve your jawline and appearance... it actually makes it worse.

   You can definitely feel the tension and soreness in your face when, and after, using it. BUT just because something hurts, doesn't mean it's a good workout. 

   Still, they've got impressive transformation photos on their website. I'm skeptical though.

   Many of them are a result of different tongue positions in the mouth, weight loss, jutting out the chin, different lighting and I think even face-lifts. See for yourself though rather than listening to me.


Diagram of facial muscles

A diagram showing the main chewing muscles. The Masseter muscle is also known as the "jawline muscle" 




Does Jawzrsize Slim Your Face?

It does the opposite. It bulks up your head. I explained above that Jawzrsize heavily stimulates the temporalis muscle – which makes your head wider at the top. That's the opposite of slim.

   Even with the lesser stimulation of the masseter muscles... you're building muscle. You're adding bulk to your face – not slimming. Losing weight is what results in a slimmer face. 

   The "spot training" that Jawzrsize claims to do isn't possible. You can't choose where to burn fat from your face by working out your face.

   If you run a marathon, your body will decide where to take the fat from, it won't melt fat off your legs just because that's what you were running with.

   Building muscle and slimming are different things. Even with all the best jawline exerciser equipment, you may not be able to see your results if there's a layer of far on top of it.




Does Jawzrsize Regrow Your Hair?

This is the silliest of all Jawzrsize's claims. Extra blood and oxygen pumped in the face, and scalp could accelerate hair growth, in my opinion.

   I think that's one reason why our hair grows faster in the summer – when we're warmer our blood sits closer to the surface of the skin, including on our scalp.

   But Jawzrsize doesn't pump any more blood to the scalp than doing a cartwheel does.

   So if the idea that extra blood to your head promotes hair growth is true, then Jawzrsize doesn't help much more than bending over to pickup a penny from the pavement.

   The silly part of their claim is that using Jawzrsize will REGROW hair. That's right. They don't just claim it will accelerate hair growth. They say that balding men and women can use it to prevent further hair loss and regrow what they've lost.

I'd love to see some evidence (any evidence) for that claim.




Does Jawzrsize Remove Wrinkles and Tighten Skin?

You can't tighten skin and fix collapsed collagen by exercising the muscles underneath. Besides, Jawzrsize doesn't stimulate the eyebrow or forehead muscles or and areas that result in facial wrinkles for people under 65 years old.

   It could prevent wrinkles around your jaw area and sagging cheeks... but those don't come until you're really old. It seems a little premature to be worrying about those in your 20s, 30s or 40s.




Which Jawzrsize Claims Are TRUE?


✅ TRUE ✅

  • 🇺🇸 Made in the US  most of these sorts of things are made in Asian countries or places like Germany. This is a pro for Jawzrsize if you are American and want to support American jobs and products
  • 📞 Decent Customer Service  I personally did not get a response to my customer support inquiry. However, from reading reviews and comments, it's obvious that Jawzrsize offers above average customer service
  • 👷‍♂️ Made from Safe Materials  I'm listing it as a pro for Jawzrsize, because many other cheap jawline devices are made from harmful materials. But basic health and safety is the bare minimum. Jawzrsize meets all the requirements



  • 🌝 A Chiseled, Defined Jawline – it leads to a found face because stimulates and grows the temporalis muscle WAY too much. This can have a severely negative effect on your facial aesthetics by widening the top half of your head- particularly above your ears
  • ☣️ Safe, Risk-Free Workout – it's actually terribly harmful for the jaw joint. the Jawzrsize device is too large and the jaw was not designed to apply high levels of force when it is so far open. Here I come TMJ, jaw joint arthritis, stiffness and clicking!
    • 🌠 It's Lasts – it actually break annoying quickly. The moulds that your teeth bite down into break quite quickly. Your incisor teeth are made for piercing after all. You either pay to replace them... or you continue using it without them and place even higher pressure on your front teeth
    • 😻 Slims Your Face – you can't spot-reduce. That means you can decide where you lose weight from, your body does it for you. Even if chewing Jawzrsize burned significant calories, which is doesn't, those calories would not be pulled from fat tissue in the face. It doesn't work that way.
    • 🦷 Safe for Your Teeth – Ugh, just go read all the negative Trustpilot reviews. This device applies all the pressure to your front incisor teeth. These teeth are made for piercing and tearing, NOT for grinding and applying high force like the molar teeth are. I'm surprised their aren't more stories of people damaging their teeth with Jawzrsize
    • 🎀 Regrows Your Hair – pumping blood to your head and scalp it supposed to be help speed hair growth. There's little evidence. But Jawzrsize claims to regrow hair for men and women that are, or are going, bald. This is totally laughable. 





    Why Jawzrsize is Dangerous

    Jawzrsize is an Incisor-Based type of jaw trainer.... the bad type. The entire list of Top 10 Worst Jawline Exercisers is composed of incisor-based trainers.

       Jawzrsize was the inventor of this category when they released their first model in 2016.

       Since then, the Molar-Based type of jaw trainer has been invented. It is a much healthier and more effective option.


    diagram of Incisor-based vs Molar-based jawline tool

    Jawzrsize is an incisor-based tool (left). Molar-based tools (right) and more effective and safe



    📐 Jaw Joint & Muscles

    The degree of stress on the temporomandibular joint (TMJ) depends on how wide the mouth open and closes during exercise. Wide ranges of motion cause the TMJ to dislocate and re-adjust.

       This isn't the worse thing by itself, but add the constant load from Jawzrsize... then it's dangerous and causes significant wear on the bone or cushioning cartilage in the joint. Jaw pain, cracking, arthritis and tension headaches are some of the potential side-effects.

    There's more than a slight risk that Jawzrsize may cause teeth and jaw alignment issues, as well as a range of TMJ disorders; arthritis, bruxism, cracking, popping, tension headaches and pain. 


    🦷 Teeth

    The incisor teeth were naturally designed for piercing and tearing. They are not suited for the high, repeated pressure of Jawzrsize. In the worst case this can lead to chipped, crooked, or broken teeth.

       When force is applied at unnatural angles on the teeth, it can act as unintentional orthodontics. If this force is repeatedly applied, it can result in shifting of the teeth or changes in the bite position. End result is TMJ disorders and alignment issues.




    3 Healthy Jawzrsize Alternatives

    (Use These Instead!)



    • 🥇THE JAWLINERS: these are the best molar-based jawline exercisers available today. They are both safe and effective. Start with the Beginner and move up to higher resistances as your jaw and face gets stronger.
    • 🥈Jawliner Gum: a mint flavored gum that has been created to be 15x harder than regular chewing gum. It's cheaper than mastic gum but loses its taste faster and doesn't come with the same health benefits. 
    • 🥉Mastic Gum: this is 10x harder than regular chewing gum. It's a 100% natural tree sap harvested on the Greek island of Chios. It's a convenient way to train your masseter muscles while you are working, driving, studying or doing anything for that matter.


    READ MORE: the 5 best jawzrsize alternatives




    🏁 SUMMARY 🏁

    As popular as Jawzrsize is... it's not great. There's far more effective jawline equipment available that won't cause long-term damage to your teeth and jaw joint.

       The company makes too many claims in an attempt to reader a wider audience and market.

       No, this one rubber device cannot simultaneously build muscle in your face, whilst slimming your face, regrowing hair from your bald spot, removing wrinkles, and curing your diseases.

       However, Jawzrsize is still the best available option of the incisor-based jawline trainers. If for some reason you must use this type, I recommend the Jawzrsize Pop 'N 'Go because of its lower resistance level.




    🍀  GOOD LUCK  🍀

    Thank you for reading my answer to "does jawzrsize work"?. If you enjoyed it, please share it with your friends - thanks!

    Matt Phelps- founder of Jawline Gum

       Matt Phelps

       YouTuber & Founder of STEEL



    P.S still want to know more? I wrote (and filmed) a stupidly long and thorough breakdown of the Jawzrsize product and company👇

    Jawzrsize Review – My Complete Analysis


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