By Lauren Blackwood, FNP-C — Master Injector, The Aesthetic Medicine and Anti-Aging Clinics of Louisiana. Reviewed by Todd Patrick Howell, MD — Founder & Medical Director · 17+ years aesthetic medicine.
For most patients, the forehead requires between 10 and 30 units of Botox per treatment. Where you fall in that range depends on three things: the strength of your forehead muscle (the frontalis), the depth of the lines already present, and the look you’re going for. A first-time patient in her early 30s with light expression lines may need 10 to 16 units. A patient in her 50s with deeper horizontal forehead lines, or a man with a thicker frontalis muscle, may need closer to 30. This guide explains how we decide — and why dosing for the forehead is the single most nuanced injection we do.
Botox of the forehead is the most commonly requested injectable treatment at our Baton Rouge and Lafayette clinics. It’s also the area where over-dosing or under-dosing has the most visible consequences. Done well, it leaves you looking rested and lifted. Done by feel or formula, it leaves you looking frozen, heavy-browed, or like nothing happened at all. Here is how we approach it.
The Three Forehead Muscles That Need Botox
When patients say “forehead,” they usually mean the horizontal lines across the upper face. But the forehead is actually three connected muscle groups, and Botox treatment for the forehead almost always involves at least two of them.
The Frontalis (the muscle that creates horizontal forehead lines)
The frontalis runs vertically across your forehead and lifts your eyebrows. When you raise your eyebrows in surprise, that’s the frontalis. Over years of expression, repeated contraction creates the horizontal lines we treat. This is the primary target.
The Glabellar Complex (the muscles that create the “11s”)
The vertical lines between your eyebrows — the “11s” or frown lines — are caused by three muscles that work together: the corrugators and the procerus. Treating the forehead without addressing the 11s is a common mistake. The 11s pull the brow down; the frontalis pulls it up. Treating only the frontalis can leave the 11s overactive and the brow heavy. We almost always treat them together.
The Lateral Frontalis (the corners of the forehead)
The outer edges of the frontalis lift the tail of the brow. Treating only the central forehead can leave the brow looking peaked or surprised. A balanced forehead treatment respects the full sweep of the frontalis, not just the middle.
Why Unit Counts Vary by Patient
There is no universal forehead dose, and providers who quote one are working from a formula rather than from anatomy. The factors that determine your dose:
- Muscle mass. Men typically have a thicker frontalis than women and often require 20 to 30 units for full effect. Many male patients have been under-dosed elsewhere and assume Botox “doesn’t work” on them — usually it just wasn’t dosed correctly.
- Line depth. Light expression lines respond to lower doses. Deeper static lines (the ones present at rest) require more units, and often a touch-up at the 2-week mark.
- Brow position. Patients with naturally heavy or low brows need a more conservative dose to avoid further lowering the brow.
- Treatment goals. A patient who wants subtle softening receives a different dose than a patient who wants the lines fully resolved.
- Botox history. Long-term Botox patients often develop a thinner, weaker frontalis over time and may need less product to maintain results.
Standard Dosing by Facial Anatomy
Below are the dosing ranges we use as a starting point at consultation. Final doses are always personalized.
- Forehead (frontalis only): 8–20 units for women, 12–30 for men
- 11s / Glabellar (corrugators + procerus): 15–25 units
- Crow’s feet (orbicularis oculi): 6–12 units per side
- Full upper face balanced treatment: 30–60 units total
Patients who treat the full upper face together — forehead, 11s, and crow’s feet — tend to achieve the most balanced and natural-looking result. Treating one area in isolation often shifts the responsibility for expression to surrounding muscles, which can create asymmetry.
The Eyebrow Drop Risk — And How We Prevent It
If you’ve heard of someone getting Botox and ending up with heavy, hooded-looking eyebrows, that’s what’s known as brow ptosis — and it’s the single most common preventable side effect of forehead Botox.
Brow ptosis happens when the frontalis (which lifts the brow) is over-treated relative to the depressor muscles (which pull the brow down). The brow ends up sitting lower than it did before, and patients describe their face as looking “tired” or “hooded.”
We prevent brow ptosis in three ways: by assessing your natural brow position before injecting, by treating the depressor muscles (the 11s and lateral orbicularis) appropriately to balance the lift, and by being conservative on first-time patients. We would rather you come back at the 2-week mark for a small touch-up than over-treat on the first visit. Touch-ups are part of our protocol, not a second appointment you have to pay for.
Combining Forehead with 11s and Crow’s Feet
Most of our patients receive what we call a balanced upper-face treatment — forehead, 11s, and crow’s feet in a single appointment. The aesthetic logic is straightforward: the muscles of the upper face all interact. Treat one in isolation and the others compensate.
The functional logic is the same. Patients who treat only the forehead often find that their 11s deepen over the following weeks as the frontalis loses its counter-pull. Patients who treat the 11s alone often find that the forehead works harder and develops new lines. Treating the full upper face together produces a smoother, more rested result that lasts the full duration of the product.
Cost Per Unit at Our Baton Rouge and Lafayette Clinics
Botox is priced per unit at our clinics, which is the industry standard and the only honest way to price it. Per-treatment pricing (often advertised as “$200 for forehead”) obscures whether the dose is actually adequate for your anatomy.
Our members on the Essentials and Elite tiers receive included Botox units as part of their monthly membership benefits, along with member pricing on additional units beyond that allotment. For most patients who maintain Botox at a regular cadence (every 3 to 4 months), the Elite membership tier ends up being more cost-effective than per-treatment pricing.
We’re happy to walk through specific pricing at your consultation. Patients also have access to financing through CareCredit, Cherry, and PatientFi for treatment packages.
Frequently Asked Questions
How long does forehead Botox last?
For most patients, forehead Botox lasts 3 to 4 months. First-time patients sometimes see slightly shorter duration as the muscle is at full strength; long-term patients often experience longer duration as the muscle weakens with consistent treatment. Genetics and metabolism play a role — very active patients and those with faster metabolisms may metabolize Botox more quickly.
Will Botox make my forehead look frozen?
Only if it is over-dosed or misplaced. A properly dosed forehead treatment softens expression lines without eliminating natural expression. You should still be able to express subtle surprise or concern — just without the deep horizontal lines. If your forehead has looked frozen after Botox elsewhere, that’s a dosing or technique issue, not a Botox issue.
How long does the injection itself take?
About 10 minutes once you’re in the chair. Including consultation, expression assessment, marking, and aftercare instructions, plan for 30 minutes total at your appointment.
How soon will I see results?
Most patients notice softening at the 3 to 5 day mark, with full results at 10 to 14 days. We always offer a 2-week touch-up if a small additional dose is needed to achieve full symmetry.
Can men get Botox on the forehead?
Yes — and roughly 60% of our patients are men. Male forehead Botox typically requires more units (due to thicker frontalis muscle) and a different injection pattern (to maintain a flatter, more masculine brow shape rather than a peaked or feminized arch). We treat men’s foreheads frequently and tailor the dose and placement specifically to male facial anatomy.
Is Botox safe long-term?
Botox has been FDA-approved for cosmetic use since 2002 and has been used clinically for decades before that for medical conditions. Long-term cosmetic use is well-studied and considered safe. The most common long-term effect is muscle atrophy in treated areas — meaning over years of consistent treatment, you may need fewer units to achieve the same result.
What should I avoid after Botox?
For 24 hours: avoid lying flat, rubbing the treated area, intense exercise, alcohol, and hot showers or saunas. After 24 hours, you can resume normal activity. We provide written aftercare instructions at the appointment.
Schedule Your Botox Consultation
If you’re considering forehead Botox in Baton Rouge or Lafayette, the right starting point is a consultation. We will assess your anatomy, discuss your goals, and recommend the dose that fits — not a formula. Call (225) 753-1234 (Baton Rouge) or (337) 484-1234 (Lafayette), or schedule online to meet with Samantha, Lauren, or another member of our master injector team.
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