How Much Does Masseter Botox Cost? (2026 Guide)

The masseter is the muscle you can feel bulge at the back of your jaw when you clench your teeth. It is thick, dense, and built for sustained force — it is the strongest muscle in the body by weight.

Relaxing it takes a meaningfully larger dose than the small, thin muscles of the upper face. For comparison:

• Crow's feet: roughly 8-12 units per side
• Forehead lines: roughly 6-12 units total
• Glabella (elevens): roughly 15-25 units total
• Masseter: roughly 20-40 units per side

Since neuromodulator is billed by the unit, a masseter treatment naturally lands at a higher total than most upper-face treatments. That is a function of anatomy, not an upcharge.

Per-unit pricing at established NYC and Miami practices in 2026 generally runs $14-$20 per unit for Botox. Applied to masseter dosing, that produces a wide but predictable total:

• Conservative first session (20-30 units total): roughly $300-$600
• Typical session (30-40 units total): roughly $450-$800
• Larger or very strong masseters (40-60 units total): roughly $600-$1,200

At Plump, masseter Botox is $16 per unit standard and $14.40/unit for members, with average dosing of 30-40 units. Pricing is posted openly on our Treatments page — no consultation required to see the number.

Be cautious with practices that quote a flat "masseter package" without naming a unit count. A $400 flat rate is expensive if it only covers 20 units and a bargain if it covers 50. Without the unit count, the price is not comparable to anything.

Dosing depends on muscle size, not on your goal. A patient with years of heavy clenching has a substantially larger masseter than someone seeking mild contouring, and needs more product to achieve the same relaxation.

Your injector assesses this by having you clench while they palpate the muscle. Broadly:

• Smaller masseters, cosmetic slimming goal: 20-25 units per side
• Average masseters: 25-30 units per side
• Heavy clenchers, visibly hypertrophied masseters: 30-40 units per side

Many injectors, including ours, deliberately start conservative on a first session. Under-dosing is easy to correct at a two-week follow-up; over-dosing means waiting months for it to wear off. If a practice offers to dose you at the high end without examining the muscle, that is worth questioning.

Almost never, and it is worth setting expectations honestly here.

When masseter Botox is done for jaw slimming, it is cosmetic and is not covered by any health plan. When it is done for TMJ disorder, bruxism, or chronic jaw pain, some patients pursue coverage — but in practice, most commercial plans in the US do not cover masseter injections for TMJ, and those that do typically require documented failure of conservative treatment first (night guard, physical therapy, dental evaluation).

Botox is FDA-approved for chronic migraine, which is a separate protocol from masseter injection and involves different injection sites. If migraine is your primary complaint, that is a conversation worth having with a neurologist rather than assuming masseter treatment will be billed the same way.

HSA and FSA eligibility varies by plan administrator and generally requires a documented medical indication. Ask your administrator before assuming.

A single treatment lasts 4-6 months, so the honest way to budget masseter Botox is annually rather than per session.

At two to three sessions per year at Plump's standard $16/unit and 35-unit average, that is roughly $1,100-$1,700 per year. Member pricing at $14.40/unit brings the same schedule to roughly $1,010-$1,510.

One genuine cost advantage over time: the masseter progressively atrophies with consistent treatment. Many patients who treat on schedule find that after the first year, they need fewer units to maintain the same result, and some stretch to two sessions per year instead of three. The dose curve tends to bend downward, not upward.

A quote you can actually evaluate contains four things:

1. The product — Botox, Dysport, or another neuromodulator. Dysport is dosed differently (roughly 2.5-3 Dysport units per Botox unit), so per-unit prices are not comparable across products.
2. The unit count, stated before treatment, not calculated after.
3. The per-unit rate, so you can check the math yourself.
4. The follow-up policy — whether a two-week assessment and any small adjustment is included.

If a practice will not tell you the unit count before you are in the chair, that is the signal to ask more questions. Every established practice expects this one.