Genniel, RN
InjectCo is Austin's 100% nurse-led clinic for jawline slimming Botox, with more than 10,000 treatments performed across nine Texas locations. We are on the East 6th Street corridor in the Holly neighborhood, between Robert T. Martinez Jr. Street and Pedernales Street.
If you know the H-E-B on East 7th Street, we are a few blocks south of it.
Masseter Botox softens a square jaw and eases clenching. $12 per unit, the same price at every InjectCo location.
Jawline slimming Botox treats the masseter, the chewing muscle at the back of the jaw. Relaxing it reduces how hard you can clench, and over time the muscle gradually reduces in bulk.
That gives two separate benefits, and patients usually come for one and are pleased by the other.
The cosmetic one. A softer, less square lower face. This is gradual. Most patients see the change over about four to eight weeks, not days.
The functional one. Less clenching and grinding, which often means less jaw ache and fewer tension headaches.
Dosing runs around 20 to 30 units per side, so 40 to 60 units for the pair. At $12 per unit that lands roughly between $480 and $720.
Results commonly last about three to four months at first, and many patients find the interval stretches once they have had a few rounds.
Your masseter Botox is placed by Genniel, RN, a Clinical Aesthetic Nurse Injector at our East 6th Street clinic. She treats Austin patients through the week.
The masseter sits near muscles used for smiling, so depth and placement decide whether you get slimming without changing your expression. Genniel assesses how strong your masseter actually is before dosing. A physician backs the clinical team.
InjectCo is 100% nurse-led. Every jawline slimming Botox appointment is handled by a trained nurse with physician oversight, so you are working with someone who understands both the clinical side of the treatment and the Austin community they serve.
Your masseter is the muscle you feel flexing when you clench your teeth. When a muscle is used every day, from chewing, clenching, or grinding, it can grow larger and widen the jaw. Botox relaxes that muscle so it works less, and over several weeks a less-used muscle gets a little smaller. As it shrinks, the jaw looks softer and slimmer.
Slimming is gradual. Many patients start to feel less clenching within a week or two, but the visible slimming builds over about four to eight weeks and can keep improving with repeat treatments. Results commonly last around three to four months at first, and often longer once you have had a few rounds, as the muscle stays smaller when it is treated regularly.
Approved patients can begin treatment the same day and pay over time instead of all at once.
How it works: apply online with CareCredit or Cherry in a few minutes, get a decision on the spot, then bring your approval to your appointment. Our team can help you compare options during your consultation and apply on the day if you prefer.
Terms and rates are set by the financing provider. Your nurse will walk you through your total cost, including any financing fee, before anything is booked.
Most Austin patients want a number before they arrive. Unit counts depend on muscle strength and the area treated, which your nurse assesses in person.
Pick your treatment areas and get an instant unit and cost estimate. It takes about a minute and gives you a realistic number to bring to your Austin assessment.
Neurotoxin work is often planned across more than one area in a single visit, and sometimes alongside filler when the concern is volume rather than movement. Your nurse assesses which is driving the result you want before recommending anything.
Botox in Austin for movement-related lines.
Dysport in Austin, an alternative neurotoxin.
Xeomin in Austin, the membership-rate product.
Dermal fillers in Austin when the concern is volume, not movement.
See every nurse-led treatment at our Austin med spa in one place.
InjectCo MedSpa Austin is located at 2235 E 6th St, Unit 106, on the East 6th Street corridor between Robert T. Martinez Jr. Street and Pedernales Street, in the Holly neighborhood of East Austin.
We are directly across East 6th from UT Elementary Charter School, about a third of a mile from the H-E-B at 2701 East 7th Street, and roughly two-thirds of a mile east of the Plaza Saltillo MetroRail station. I-35 is about a mile west, and East Cesar Chavez Street is a few blocks south.
We serve patients across East, Central and South Austin. Typical drives are East Cesar Chavez about 4 minutes, Downtown about 10, Cherrywood about 11, Travis Heights about 12, Mueller about 13, Bouldin Creek about 15, Hyde Park and Windsor Park about 16, South Congress about 17, Zilker about 19, Tarrytown about 20, Rollingwood about 22 and West Lake Hills about 23. Measured in afternoon traffic, so your own trip will vary.
Mon to Sun, 8:00 AM to 8:00 PM
Mueller
Del Valle
South Congress
Zilker
Pflugerville
Yes. Botox relaxes the masseter, the muscle that widens the jaw when it is overused from chewing or clenching. As the muscle works less, it gradually gets a little smaller, and the jaw looks slimmer and softer from the front and the side. The change is gradual and builds over several weeks, so it looks natural rather than sudden.
Masseter treatment commonly uses somewhere around 20 to 30 units per side, so both sides together often land around 40 to 60 units, depending on how strong your jaw muscle is. A stronger, more built-up muscle usually needs a bit more. Your nurse checks your muscle by having you clench, then confirms your unit plan at your consultation.
Pricing starts at $12 per unit. Because the masseter is a large muscle, jaw slimming often uses around 40 to 60 units total, so a common treatment lands near $600, though your exact cost depends on your muscle and is set at your consultation. You can estimate your total with our online price tool before you come in.
Yes, for many patients. When the masseter relaxes, it clenches and grinds less, which often eases jaw soreness and TMJ tension, and some people notice fewer tension headaches. Many patients come in for the clench relief and enjoy the slimming as a bonus. Your nurse can dose with either goal, or both, in mind.
Results commonly last about three to four months at first. With repeat treatments, many patients find the effect lasts longer, because the muscle stays smaller when it is treated on a regular schedule. When you notice the muscle getting stronger again, you simply book another round.
When it is dosed and placed correctly by a trained injector, masseter Botox is designed to slim the muscle without causing sagging. Poor placement or too high a dose is what raises that risk, which is exactly why a skilled, licensed injector matters. At InjectCo MedSpa Austin, your nurse places the dose low and precisely to slim safely, and will explain your plan first.
It should not change your smile when it is placed correctly, because the injection sits low in the jaw muscle, away from the muscles that move your mouth. Your nurse maps the area carefully to keep your expressions natural. If you have concerns, bring them to your consultation and your nurse will walk you through exactly where the dose goes.
Tell your injector about every medication and supplement you take at your consultation, including blood thinners and anything that affects your muscles or nerves. Your nurse reviews your full health history and gives you personalized guidance, since this is a medical decision that depends on you. This is general information and not individual medical advice, so your consult is the place to sort out the details.
Botox has a long track record when it is placed by a trained, licensed injector, and masseter treatment is a common, well-understood use. At InjectCo MedSpa Austin, every treatment is nurse-led, and your nurse reviews your health history first to make sure you are a good candidate. Your nurse will also explain how any rare side effects are handled, so you know what to expect.
If you wake with a sore jaw, or your lower face has squared off over the years, this treats both at once. The assessment takes about fifteen minutes.
Evening and weekend slots at the Austin clinic fill first.
Botulinum toxin treatment at InjectCo MedSpa Austin is performed by licensed registered nurses under physician supervision. Masseter treatment is an off-label use of botulinum toxin.
Known risks include injection-site pain, bruising, temporary weakness in nearby muscles, asymmetry, and effects spreading beyond the treated area. Tell your provider about all medications and any neuromuscular condition. Treatment is not performed during pregnancy or breastfeeding.
Results vary between individuals depending on the area, the product selected and the dose. Changes commonly develop over two to six weeks and may last four to six months.
Individual results vary. This treatment may not be suitable for everyone. Consult your medical provider.
Medically reviewed by Dr. Josh Allen, D.O., Medical Director, InjectCo MedSpa.
Medically reviewed by Dr. Josh Allen, D.O., Medical Director, InjectCo MedSpa. Last reviewed: [Month] 2026.
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