Timeline
What happens, and when
This treatment runs on a slower clock than facial wrinkle relaxers. The relief from clenching arrives first; any visible change in jaw shape takes months and several rounds, because the muscle has to shrink from disuse rather than simply relax.
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Before
Consultation
The provider feels the muscle while you clench so they can judge its size and where its bulk sits, which varies a lot between people. They will ask whether your interest is the clenching, the shape, or both, because the dose and placement differ. They also ask about jaw pain, headaches on waking, and whether a dentist has mentioned wear on your teeth.
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Day 0
The appointment
A small number of injections are placed into the muscle on each side, deeper than a typical facial treatment because the target is a thick muscle rather than a thin one near the surface. It takes only a few minutes. Most people find it more comfortable than facial injections, since there is more tissue between the needle and bone.
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Day 3-7
Clenching eases
The reduction in clenching force is usually the first thing people notice, often within the first week. Many report waking without the jaw tightness they had stopped noticing as unusual.
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Week 2-4
Chewing adjusts
It is common and expected for chewing to feel weaker or tire more easily during this period, particularly with tough food. This settles as you adapt. Some people notice a slight change in how their smile feels before it normalizes.
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Month 2-4
Shape begins to change
If jawline slimming is the goal, this is where it starts. The muscle reduces in bulk from doing less work, and that takes time. A visible change usually needs two or three rounds spaced over six to twelve months rather than one treatment.
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Month 4-6
Repeat treatment
Effects in this muscle commonly last longer than in the face, since larger doses are used in a larger muscle. Once the desired shape is reached, many people move to a maintenance schedule at longer intervals.
Cost
What it costs in Napa
Most people in the Napa area pay roughly $400 to $900 per session. Prices vary by provider and treatment area, so ask for a quote at consultation.
This costs more than a facial wrinkle relaxer treatment for a simple reason: the masseter is a large, powerful muscle and it takes considerably more product to affect it. Typical plans use several times the units of a frown line treatment, spread across both sides.
That also means per unit pricing is worth understanding here more than anywhere else. A practice charging a competitive rate per unit can still produce a large total, because the unit count is high. Ask what the total will be for both sides before you book.
If your goal is jawline shape rather than clenching relief, budget for a course rather than a session. Two or three treatments over the first year is a common plan, with longer gaps once the change is established.
Questions worth asking about price
- What is the total for both sides, not the rate per unit?
- How many rounds do you expect before I see a change in shape?
- Does the dose go down once the muscle has reduced?
- Is a review appointment included?
Suitability
Who it tends to suit
The two reasons people come for this are worth separating, because they have different outcomes. If the goal is relief from clenching and grinding, most people notice a difference within a week or two and the treatment is doing something measurable. If the goal is a narrower lower face, the result depends on how much of your jaw width comes from muscle rather than from bone. Muscle can be reduced. Bone cannot, and no amount of product will change it.
That distinction is the main thing a consultation should establish. A provider who feels the muscle while you clench can usually tell you how much of your jaw width is likely to respond. Someone whose width is largely skeletal should be told that plainly rather than sold a course.
Providers screen as they would for any product in this class, including pregnancy and breastfeeding, certain neuromuscular conditions and known sensitivity to ingredients. They should also ask what else is being done about the clenching, since this treatment addresses the force of the muscle rather than the cause of the habit.
Worth raising at consultation
- Whether a dentist has fitted you with a night guard, or suggested one.
- Whether you get headaches on waking, or jaw pain that worsens through the day.
- Whether your interest is the clenching, the jaw shape, or both.
- Any previous treatment in this muscle and how long it lasted.
Questions
Questions people ask
Will it change the shape of my face?
Over time, if there is enough muscle bulk to reduce. The change is gradual and usually needs two or three rounds before it is obvious, because the muscle shrinks from reduced use rather than from the injection itself. If your jaw width comes mostly from bone structure, the change will be slight whatever the dose.
Will I be able to chew normally?
Yes, though it is normal for chewing to feel weaker for a few weeks after the first treatment, particularly with tough or chewy food. Most people adapt without much thought. Providers generally start conservatively for exactly this reason and increase the dose at the next round if needed.
Does it stop grinding at night?
It reduces how forcefully the muscle can contract, which is why people report less jaw tension and less tooth wear. It does not stop the underlying habit, and it is often used alongside a night guard rather than instead of one. What causes the grinding is a question for a dentist or physician.
How long does it last?
Commonly four to six months, longer than the same product in the face, because larger doses are used in a much larger muscle. Once a shape change has been achieved, some people find maintenance treatments can be spaced further apart and use less product.
Does it hurt?
Most people find it more comfortable than facial injections. The needle passes through a thicker layer of tissue and there are fewer injection points than a typical facial treatment. Some aching in the jaw for a day or two afterwards is common.
Which Napa practices offer masseter injections?
Call (707) 207-8167 and we will point you toward licensed providers offering masseter treatment in Napa and the surrounding Napa County communities, including Yountville, St Helena, Calistoga and American Canyon.