Quick Answer
How many units of Botox do I actually need?
Typical ranges by area: forehead 10 to 20 units, frown lines (the 11s) 20 to 30, crow's feet 10 to 24 total across both sides, lip flip 4 to 8, masseter 40 to 100 total, and hyperhidrosis roughly 100 units per underarm. Your exact dose depends on muscle strength, whether you want soft or fully relaxed, and whether you have prior Botox history. First-time patients usually start conservative and fine-tune at a 2-week follow-up.
For product details and a full breakdown of how treatment actually runs: Botox injection treatments.
The 3-Question Dosing Framework
Three questions decide your dose faster than any online unit calculator.
1. How strong is the muscle you're treating? A strong frontalis (the one that raises your eyebrows), a dense corrugator (the frown muscles between the brows), or a heavy-grinder masseter all need more product than the average. Muscle strength, not age or gender alone, drives the unit count. Your injector assesses this by watching you animate during the consultation — raise your brows, frown hard, clench your jaw. The way your muscles move tells an experienced injector what the baseline dose needs to be.
2. Do you want soft-and-still-expressive, or fully relaxed? Two patients with identical anatomy can end up at different doses because they want different results. "Soft" usually runs 20 to 30 percent lower than "fully relaxed." There's no right answer. What matters is that you actually tell your injector which one you want. The default at most reputable practices is conservative on the first visit, with the option to add more at a 2-week follow-up.
3. Have you had Botox before, and did it work? First-timers and patients returning after a long gap (over a year) generally need a full starting dose because the muscles have returned to baseline strength. Regular patients who've been treated every 3 to 4 months for years often need slightly less over time as the muscles become less active. And if your last round wore off in 6 weeks, the most common explanation is under-dosing, not "Botox doesn't work on me."
Answer those three and your injector can build a dosing plan that fits your face instead of a generic menu.
Forehead: 10 to 20 Units
Horizontal forehead lines come from the frontalis muscle pulling your eyebrows up. Botox relaxes that muscle so the lines soften without freezing your ability to raise your brows.
Typical dose: 10 to 20 units. Most women land around 12 to 16 units. Most patients with stronger muscle mass (or simply a denser frontalis) land closer to 16 to 24.
Why the range is wide: The frontalis varies a lot person to person. Some patients have a short, strong frontalis that needs aggressive dosing. Others have a long, weak one where 10 units is plenty. Experienced injectors can usually tell by watching how your brows move.
Important pairing rule: The forehead should almost never be treated alone. If you relax the frontalis but leave the glabella (frown muscles) active, your brow can drop. Treating both keeps the brow position natural. This is why most "full upper face" treatments start with a combined forehead + glabella approach.
Forehead Before and After: 14 Units
This result came from 14 units across the frontalis, paired with 22 units in the glabella to keep the brow position lifted. Softer lines, natural movement, no frozen look. That's what proper dosing looks like.
Results peak at 14 days. Touch-ups at a 2-week follow-up are standard for first-time patients who need a couple more units.
Frown Lines (the 11s): 20 to 30 Units
The vertical lines between your eyebrows come from the corrugator and procerus muscles. They fire when you concentrate, squint, or frown. This area (the glabella) is the single most commonly treated area with Botox, and it's where the FDA originally approved the cosmetic indication back in 2002.
Typical dose: 20 to 30 units. Most women need 20 to 25. Patients with denser muscle mass or a deep, set-in "11" often need 25 to 35.
Why this area needs more: The corrugator muscles are strong. They pull against each other constantly, which is why people develop deep vertical lines between the brows over time. Under-dosing here is the number one reason patients feel their Botox "didn't work."
Preventive angle: Patients in their late 20s and early 30s who come in before deep lines form often start lower — 18 to 20 units — because the muscle isn't as trained. That lighter dosing still produces the preventive benefit of slowing new wrinkle formation.
What 20 vs 30 units looks like: At 20 units, you'll still be able to furrow slightly when you really try. At 30, the area is fully relaxed. Neither is right or wrong. It's a preference about how much movement you want to keep.
Crow's Feet: 10 to 24 Units Total
The fine lines that fan out from the corners of your eyes when you smile come from the orbicularis oculi. Treating this area softens the lines without changing the character of your smile.
Typical dose: 10 to 24 units total, split evenly between both sides. Most patients land at 5 to 10 units per side.
Why the range feels narrow: The orbicularis oculi is a delicate muscle. Over-treating it can cause the cheek to lift unevenly or the lower eyelid to feel heavy. Injectors dose conservatively here and add more at the 2-week follow-up if needed.
Smile consideration: Patients with dynamic "apple cheek" smiles sometimes leave the lower crow's feet untreated to preserve that expression. Treating only the upper fibers softens the wrinkles without flattening the smile.
The droopy-eyelid myth: Crow's feet Botox does not cause droopy eyelids when it's placed correctly. That complication comes from product migrating to muscles it wasn't intended to hit — almost always a technique issue, not a dose issue.
Crow's Feet Before and After: 16 Units Total
Eight units per side, placed at the outer corner of the eye. Lines soften at rest and when smiling. Cheek lift is preserved. This is the result most patients are actually after.
Crow's feet results often last a bit longer than forehead results, usually 4 months, because the muscle here is smaller and doesn't fight gravity the way the frontalis does.
Lip Flip: 4 to 8 Units
A lip flip is the smallest Botox dose most practices do, and one of the most misunderstood. It is not filler. It does not add volume. A few units placed along the upper lip line relax the orbicularis oris so the lip rolls outward slightly when you smile, showing more of the pink surface.
Typical dose: 4 to 8 units, placed across 4 to 6 tiny injection points along the upper lip.
Who it's for: Patients with a thin upper lip when smiling who don't want filler, patients with a gummy smile who want to reduce gum show, or patients testing the waters before committing to filler.
What to expect: Subtle. Lasts 6 to 10 weeks (shorter than other areas because the lip muscle is constantly active). Drinking from a straw, whistling, or pronouncing certain letters can feel slightly different for the first week before the product settles.
Masseter / Jaw Slimming: 40 to 100 Units
The masseter is the big chewing muscle on the side of your jaw. When it's overdeveloped — from clenching, grinding, or genetics — it creates a wider, more square jaw. Botox relaxes the muscle over time, and the jaw slims as the muscle atrophies with continued use.
Typical dose: 40 to 100 units total, split between both sides. Average first treatment lands at 50 to 60 units total (roughly 25 to 30 per side).
Why the range is so wide: Masseters vary enormously in size. A patient with a subtle masseter might need 40 units total. A heavy grinder with a large, dense masseter might need 100 or more to see meaningful slimming.
Why it costs more: Masseter Botox is the most expensive neurotoxin treatment most practices offer, purely because it requires significantly more product. The per-unit price is the same — there are just a lot more units in the vial.
The timeline is different. Unlike forehead or crow's feet where you see results in 2 weeks, masseter slimming takes 6 to 12 weeks to appear and continues improving with repeat treatments. Most patients see peak aesthetic results after their second or third session. TMJ and grinding relief, on the other hand, usually shows up within 2 to 3 weeks.
Smaller Targeted Areas
Not every Botox treatment is for a marquee area. These smaller targeted uses each run 4 to 10 units and often make a bigger difference than patients expect.
Brow Lift (4 to 8 units)
Placed under the tail of the brow to relax the muscle pulling it down. Creates a 1 to 2mm lift and opens the eye area without surgery.
Bunny Lines (4 to 10 units)
Diagonal wrinkles on the sides of the nose when you smile or scrunch. Treated with 2 to 5 units per side. Often missed by injectors who only treat the big three.
Chin Dimpling (4 to 10 units)
Relaxes the mentalis muscle that creates orange-peel texture on the chin. Common in patients who've lost collagen in the lower face.
Neck Bands (25 to 50 units)
Vertical platysma bands from aging or genetics. Softened with small injections along each band. Often paired with filler or Sculptra for a complete lower-face plan.
Gummy Smile (4 to 8 units)
Relaxes the muscle that lifts the upper lip too high when smiling. Reduces gum show without changing the character of the smile.
Downturned Mouth (4 to 8 units)
Treats the depressor anguli oris at the corners of the mouth. Softens a resting sad or tired expression. Subtle but meaningful for the right patient.
Hyperhidrosis: About 100 Units per Underarm
Botox for excessive sweating is FDA-approved and one of the highest unit counts you'll encounter. It blocks the nerve signals that trigger sweat glands, so treated areas stop sweating almost entirely.
Typical dose: About 100 units per underarm (50 units per side is the FDA-labeled dose for axillary hyperhidrosis). That's roughly 200 units if you're treating both sides.
Duration: 6 to 9 months — longer than cosmetic Botox Encinitas treatments because the nerves take more time to regenerate the signal pathway.
Why the high dose: You're blanketing the entire sweat-producing area under each underarm, not targeting a single muscle. The product is diluted across many small injection points.
Palms and soles can also be treated but require different technique and numbing, so expect a different fee structure than standard underarm treatment.
When You're Being Under-Dosed (or Over-Dosed)
Most dosing complaints fall into one of two categories. Here's how to tell which one you're experiencing and what to do about it.
Signs you're being under-dosed:
- Your result wears off in 6 to 8 weeks instead of lasting 3 to 4 months
- You can still see full expression lines after 2 weeks
- Your forehead feels no different than before injection
- You feel like you "didn't get what you paid for"
The fix: a slightly higher dose on your next visit. Bring it up directly — a good injector will adjust the plan. Do not switch brands first. The same anatomy that underresponded to Botox will generally underrespond to Dysport or Jeuveau at equivalent dosing.
Signs you're being over-dosed:
- A heavy forehead that feels tight or hard to lift
- Eyebrows that drop or look lower than before
- A frozen look around the eyes when you try to smile
- Loss of all expression in treated areas
The fix: ride it out (Botox wears off naturally in 3 to 4 months) and dose lower next time. There is no reversal agent for neurotoxin the way Hylenex reverses hyaluronic acid filler. Tell your injector what happened so they can adjust your plan permanently.
Neither of these outcomes is dangerous, but both point to a dosing conversation that should have happened before the needle touched your skin. If your injector isn't open to that conversation, that's a sign to find a different provider.
When Botox Isn't the Right Call
Honest answer from an RN: Botox is the wrong call more often than you'd think. If any of these apply, a different treatment — or no treatment at all — will serve you better.
You have a neuromuscular condition. Myasthenia gravis, ALS, and Lambert-Eaton syndrome are all contraindications to botulinum toxin. Your injector needs to know before you book.
You take aminoglycoside antibiotics. Drugs in this class (gentamicin, tobramycin, neomycin) can potentiate the effects of botulinum toxin and increase risk. Disclose current medications in consultation.
You're pregnant or breastfeeding. Most clinicians wait until after you've finished breastfeeding to inject. There isn't enough safety data to make it a standard option during pregnancy or lactation.
You want permanent results. Botox is temporary by design — it wears off in 3 to 4 months. If you're not willing to return every 3 to 4 months indefinitely, look at collagen-stimulating treatments like microneedling with RF or biostimulators instead.
You want volume or structural change. Botox relaxes muscles. It does not add volume, sculpt cheekbones, or restructure a jaw. Wanting "fuller lips" or "sharper cheekbones" means you want filler, not neurotoxin. Confusing the two leads to disappointed patients.
You have unrealistic expectations. Botox makes you look rested, not different. If your goal is to look like a specific celebrity or a filtered selfie, pause before you book.
If none of those apply, you're likely a good candidate and the only real question is dose. An experienced injector will tell you the specific number for your specific face during consultation.
Typical Dosing at a Glance
Typical Botox Dosing Ranges
For planning purposes. Your exact dose is decided in consultation based on muscle strength and goals.
Considering Botox in Encinitas or San Diego?
"How many units do I need" is a question that gets a real answer from an injector looking at your actual face, not from a blog post or a unit calculator. The right dose depends on muscle strength, the result you want, and your treatment history — three things you can't see in a photo.
Call of Beauty is an Allergan Diamond Provider, which means our RN team injects in the top 1 percent of U.S. practices by volume. We quote in units (not flat "per area" pricing), we dose conservatively on first visits, and the 2-week follow-up touch-up is built in. Book a Botox consultation in Encinitas, or check the local breakdown for Botox San Diego if you're driving up from downtown, La Jolla, or the coast.
Frequently Asked Questions
Botox Dosing Questions
The dosing questions that come up most often in consultations