Botox for 11s: Labeled Doses Across Every US Toxin, and When Static Lines Remain

The vertical creases that form between your eyebrows when you concentrate, squint, or frown are colloquially known as "11 lines" or glabellar frown lines. Caused by repetitive contraction of the corrugator supercilii and procerus muscles folding the overlying skin, they are the single most common reason patients seek cosmetic injectable treatments in the United States.

While botulinum toxin injection is universally recognized as the gold-standard medical therapy for 11 lines, significant confusion exists regarding labeled dosing, product choices, and treatment boundaries:

1. The Universal On-Label Area: Unlike crow's feet (where only Botox Cosmetic and Xeomin hold FDA approval), all six aesthetic botulinum toxin type A products approved in the US carry official FDA indications for moderate to severe glabellar lines.
2. Treating 11s Alone vs. The Forehead Conjunction Rule: You can treat your 11 lines as an isolated, standalone procedure. However, the reverse is not true: official prescribing labels (such as BOTOX Cosmetic and Xeomin) specifically instruct that horizontal forehead lines should be treated in conjunction with glabellar lines (20 U glabella + 20 U forehead = 40 U total) to prevent unopposed brow depression and eyelid ptosis.
3. The 20 / 40 / 50 Unit Labeled Dosing Matrix: Standard on-label glabellar dosing varies substantially by molecular formulation: 20 Units for Botox, Jeuveau, Xeomin (standalone), and Letybo; 40 Units for Daxxify; and 50 Units for Dysport (in adults younger than 65). Dosing units are not interchangeable across brands.
4. The Dynamic vs. Static Dermal Divide: Neurotoxins relax hyperactive muscle fibers to smooth lines formed during facial animation (dynamic lines). While clinical trial data shows that up to 74% of moderate-to-severe static resting lines improve after neurotoxin relaxes the underlying muscle, deeply etched dermal scars from decades of photoaging cannot be erased by toxin alone.
5. The Ptosis Safety Boundary: Eyelid ptosis (drooping upper eyelid) is the primary regional risk of glabellar injections (occurring in 2% to 3% of clinical trial subjects). It is prevented by maintaining strict injection safety margins at least 1 centimeter above the supraorbital rim.

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Direct Answer: How Does Botox for 11 Lines Work?

For someone evaluating botulinum toxin treatment for glabellar 11s:

• What it does: Micro-injections block acetylcholine release at the neuromuscular junction of the corrugator and procerus muscles, temporarily preventing the muscular bunching that creates vertical and horizontal frown creases.
• Can you treat 11s alone: Yes. The glabella is an independent, standalone labeled treatment zone. You do not need to inject your forehead or crow's feet to receive safe, effective frown-line treatment.
• On-label products: All six US aesthetic neurotoxins—BOTOX Cosmetic, Jeuveau, Xeomin, Dysport, DAXXIFY, and LETYBO—are FDA-approved for glabellar lines.
• Standard labeled doses: 20 Units (Botox, Jeuveau, Xeomin, Letybo), 40 Units (Daxxify), or 50 Units (Dysport).
• Cost reality: A standard 20-unit glabellar session at typical rates ($10 to $25 per unit) costs $200 to $500. The American Society of Plastic Surgeons (ASPS) 2023 statistics report records an average physician fee of $697 for botulinum toxin procedures (representing a national member-surgeon benchmark across mixed multi-area sessions).
• Onset and longevity: Initial softening begins within 2 to 5 days, reaching maximum clinical effect at Day 14 and lasting 3 to 4 months (up to 6 months with Daxxify).
• What if lines remain at rest: If deep creases are visible when your face is completely relaxed, neurotoxin will soften them significantly (74% response in clinical trials), but complete resolution may require combining toxin with topical prescription retinoids, fractional laser resurfacing, or chemical peels.

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Can You Get Botox Just for 11s, or Must the Forehead Be Treated Too?

A common fear among first-time patients is that treating the glabella will force them into treating their entire upper face, leading to high costs or an unnatural, frozen appearance.

                    [Upper Facial Treatment Rules]

   Glabellar 11 Lines (Corrugators / Procerus)
   └──► CAN BE TREATED ALONE (20 Units On-Label Standalone Indication)
        • Relaxes inward and downward brow pullers
        • Often creates a subtle, flattering medial brow lift

   Horizontal Forehead Lines (Frontalis Muscle)
   └──► CANNOT BE TREATED ALONE ON FDA LABELS
        • BOTOX Cosmetic IFU: "Treat forehead lines in conjunction with
          glabellar lines to minimize the potential for brow ptosis"
        • Frontalis is the ONLY brow elevator; relaxing it without
          relaxing corrugators pushes eyebrows downward

Why 11s Can Stand Alone

The glabella consists of depressor muscles (corrugator supercilii, procerus, and depressor supercilii) whose contractions pull the eyebrows medially (together) and inferiorly (downward).

When you inject neurotoxin exclusively into the glabella:

• You relax the downward pullers.
• The frontalis muscle (the large forehead muscle that elevates the brows) remains fully functional and unopposed.
• This frequently produces a subtle, refreshing medial chemical brow lift (opening up the periorbital region) without causing brow heaviness.

The Forehead Conjunction Rule

Conversely, if a patient attempts to treat horizontal forehead lines while skipping the glabella, complications frequently arise.

The frontalis muscle is the only elevator muscle of the upper face. If an injector paralyzes the frontalis while leaving the powerful glabellar depressor muscles fully active, the depressors will pull the forehead and brows downward unchecked, causing heavy, hooded eyelids and severe brow ptosis.

For this reason, the official FDA Prescribing Information for BOTOX Cosmetic explicitly states:

"Treat forehead lines in conjunction with glabellar lines to minimize the potential for brow ptosis."

Similarly, the FDA label for Xeomin (updated July 10, 2026) specifies that horizontal forehead lines must be treated simultaneously with glabellar lines (20 U forehead + 20 U glabella = 40 U total), with a maximum cumulative upper-facial dose of 64 Units when crow's feet are included.

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Which US Toxins Are FDA-Approved for Frown Lines, and What Is Each Labeled Dose?

The United States aesthetic market features six FDA-approved botulinum toxin type A injectables. While all six share the same primary molecular mechanism—cleaving the SNAP-25 protein to inhibit presynaptic acetylcholine vesicle fusion—they differ in molecular weight, protein complex composition, and labeled dosing.

                   [The Six FDA-Approved Glabellar Neurotoxins]

   Product (Generic Name)             BLA / Approval   Labeled Glabellar Dose
   ────────────────────────────────   ──────────────   ──────────────────────
   BOTOX Cosmetic (onabotulinumtoxinA) BLA 103000 (2002) 20 Units (5 sites × 4u)
   JEUVEAU (prabotulinumtoxinA-xvfs)   BLA 761085 (2019) 20 Units (5 sites × 4u)
   XEOMIN (incobotulinumtoxinA)        BLA 125360 (2011) 20 Units (5 sites × 4u)
   LETYBO (letibotulinumtoxinA-wlbg)   BLA 761225 (2024) 20 Units (5 sites × 4u)
   DAXXIFY (daxibotulinumtoxinA-lanm)  BLA 761127 (2022) 40 Units (5 sites × 8u)
   DYSPORT (abobotulinumtoxinA)        BLA 125274 (2009) 50 Units (5 sites × 10u)*
   *(Dysport label restricted to adult patients younger than 65 years of age)

Comprehensive Six-Toxin Regulatory Matrix

For a complete breakdown of molecular structures, see every FDA-approved neurotoxin compared. For the Jeuveau-versus-Botox pair (same 20-Unit glabellar pattern, different indication lists), see Jeuveau vs Botox.

Why Dysport Uses 50 Units and Daxxify Uses 40 Units

Patients seeing "50 Units of Dysport" or "40 Units of Daxxify" often assume they are receiving more than double the dose of Botox.

This is a misunderstanding of biological potency assays:

• Dysport (50 Units): Galderma measures biological activity using Speywood units in mouse lethality assays. Due to differences in assay conditions, 50 Speywood units of Dysport deliver a clinical neuromuscular blockade roughly equivalent to 20 Allergan units of Botox in the glabella (an approximate 2.5:1 ratio).
• Daxxify (40 Units): Revance engineered Daxxify with a positively charged 35-amino-acid peptide (RTP004) that adheres tightly to the presynaptic membrane. The 40-unit labeled dose was specifically formulated and tested in pivotal trials (SAKURA 1 and SAKURA 2) to deliver extended duration of effect (median 6 months).
• The 20-Unit Quartet: Botox, Jeuveau, Xeomin, and Letybo all share a 20-unit glabellar total and are dosed at a 1:1 ratio in clinical practice.

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Anatomy and the Standard 5-Point Injection Geometry

Precision in glabellar injection requires an intimate understanding of periorbital muscular planes and vascular landmarks.

                    [The Standard 5-Point Glabellar Geometry]

                     Site 4 (4u)                     Site 5 (4u)
                  Lateral Corrugator              Lateral Corrugator
                   (Superficial)                   (Superficial)
                        ▲                               ▲
                        │  ≥ 1.0 cm ABOVE ORBITAL RIM   │
                        │                               │
                Site 2 (4u) ───►  Site 1 (4u)  ◄─── Site 3 (4u)
             Medial Corrugator       Procerus     Medial Corrugator
                  (Deep)              (Deep)           (Deep)

                             [Nose / Bridge]

The Five Target Injection Sites

On official package inserts, the 20-unit standard injection pattern is mapped as follows:

1. Site 1: Central Procerus Muscle (4 Units / 0.1 mL):
   • Location: Directly in the midline at the level of the superior orbital rim / root of the nose.
   • Depth: Deep intramuscular injection into the procerus belly.
   • Action: Eliminates horizontal transverse bridge wrinkles caused when the procerus pulls the medial brow downward.
2. Sites 2 & 3: Bilateral Medial Corrugators (4 Units / 0.1 mL each):
   • Location: Just superior to the medial bony orbital rim above the medial canthus (inner eyebrow head).
   • Depth: Deep perpendicular intramuscular injection down to near the periosteum (the corrugator originates from the medial superciliary ridge of the frontal bone).
   • Action: Relaxes the thick muscular origin that pulls the brow head inward.
3. Sites 4 & 5: Bilateral Lateral Corrugators (4 Units / 0.1 mL each):
   • Location: Placed at least 1.0 to 1.5 cm superior to the supraorbital margin, directly above the mid-pupillary or medial-limbus line.
   • Depth: Strictly superficial intramuscular or subdermal (creating a small wheal). The corrugator muscle inserts superficially into the dermis of the middle eyebrow.
   • Crucial Safety Rule: Injecting deeply or too close to the supraorbital rim at these lateral points allows neurotoxin to diffuse through the orbital septum, paralyzing the levator palpebrae superioris and causing severe eyelid ptosis.

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Will Botox Erase 11s Visible at Rest, or Only When You Frown?

One of the most important clinical concepts in cosmetic injectables is the distinction between dynamic wrinkles and static lines.

                   [Dynamic vs. Static Glabellar Lines]

   Dynamic 11 Lines (Movement):
   Face Relaxed ──► Smooth Skin
   Frowning     ──► Deep Vertical Folds Appear
   ──► Treatment: Highly responsive to labeled neurotoxin doses

   Static 11 Lines (Etched at Rest):
   Face Relaxed ──► Deep Creases Remain Visible Like Scars in Paper
   Frowning     ──► Creases Deepen Further
   ──► Treatment: Partially responsive to Toxin (74%); requires Skin Resurfacing

The 119/161 Resting Severity Trial Analysis

A widespread myth on social media claims that "Botox does nothing for lines at rest."

The primary clinical trial evidence from the BOTOX Cosmetic FDA submission proves this is incorrect:

• At baseline in pivotal glabellar trials, 39% of enrolled subjects (210 of 537) presented with moderate to severe glabellar line severity at rest (static lines).
• Among evaluable subjects, 74% of Botox-treated patients (119 of 161) achieved a rating of mild or none at rest at Day 30 post-injection (compared to only 20% [10 of 49] in the placebo group).

Why Do Static Lines Improve, and Why Might Some Remain?

When you repeatedly fold a piece of paper, a permanent crease forms in the paper fibers. Similarly, decades of frowning cause repetitive mechanical fractures in the dermal collagen and elastic matrix.

• Why static lines soften: By paralyzing the corrugator muscles, neurotoxin halts the repetitive mechanical folding action. With the muscle at rest, healthy dermis naturally unwrinkles, allowing the extracellular matrix to remodel over 30 to 60 days.
• Why deep lines may remain: In patients with severe solar elastosis, thin skin, or deep structural cross-hatching, the damaged dermal collagen cannot fully spring back.
• The Clinical Warning: If static 11 lines remain visible 2 to 4 weeks after your Botox treatment, do not inject more neurotoxin units. Adding excess toxin into an already paralyzed muscle will not fill the dermal ditch; it will only diffuse into adjacent muscles, causing brow drop or eyelid ptosis.

Evidence-Based Solutions for Residual Static 11s

When static lines persist despite complete muscle relaxation:

1. Prescription Topical Retinoids: Daily application of tretinoin (0.025% to 0.05%) upregulates procollagen gene expression to thicken the dermal bed over 3 to 6 months.
2. Fractional Laser Resurfacing: Non-ablative or fractional CO₂ laser vaporizes microscopic thermal columns to physically remodel deep dermal scar tissue; see our guide on chemical peel vs. laser resurfacing.
3. Medium Chemical Peels: TCA peels (15% to 20%) denature sun-damaged proteins to stimulate organized type I collagen.
4. Micro-Droplet Hyaluronic Acid Filler (Extreme Caution): Superficial micro-droplet injection of low-G-prime HA filler into the dermis can lift the crease. However, the glabella is the highest-risk zone on the human face for vascular occlusion and blindness due to retrograde embolization into the supratrochlear and supraorbital arteries (which connect directly to the ophthalmic artery); see our analysis of filler blindness risks and facial danger zones.

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How Long Does Botox for 11s Last on the Label?

The clinical duration of glabellar botulinum toxin follows a well-documented pharmacokinetic and pharmacodynamic trajectory.

                    [Botox Glabellar Response Curve Over Time]
                     (Source: BOTOX Cosmetic Label Table 8)

   100% ────
    80% ────────────● Day 30: Peak Efficacy (80% None or Mild)
    70% ─────────────────────────● Day 60: Sustained (70%)
    60% ───
    48% ──────────────────────────────────────● Day 90: Return of Motion (48%)
    25% ───────────────────────────────────────────────────● Day 120: Baseline (25%)
     0% ────┴──────────┴──────────┴───────────┴────────────┴─────
           Day 0     Day 30     Day 60      Day 90       Day 120 (Month 4)

Table 8 Duration Data from FDA Label

In the official BOTOX Cosmetic prescribing information, Table 8 details investigator-rated response rates (severity of none or mild at maximum frown) across 405 treated subjects:

• Day 7 (Rapid Onset): 74% of subjects achieved none or mild line severity.
• Day 30 (Peak Clinical Saturation): 80% (325 of 405) achieved none or mild line severity (vs. 3% for placebo).
• Day 60 (Month 2): 70% remained at none or mild.
• Day 90 (Month 3): 48% remained at none or mild; subtle dynamic crinkling begins to return.
• Day 120 (Month 4): 25% remained at none or mild; full muscle recovery indicates the standard retreatment interval.

For a full comparison of timelines across other toxins and body areas, see our guide on how long Botox lasts and our analysis of how long Dysport lasts.

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What Is the Eyelid-Ptosis Risk, and How Is It Prevented?

While glabellar injections are among the safest procedures in cosmetic dermatology, periorbital complications can occur if technique is compromised.

                       [Glabellar Safety Risk Map]

                   Medial Brow Elevator (SAFE)
                   Frontalis muscle untouched
                               │
       Medial Corrugator (SAFE)│   Lateral Corrugator Injection
       Deep bolus against bone ├──► MUST BE ≥ 1 CM ABOVE ORBITAL RIM
                               │    (Superficial plane only)
                               │         │
                               │         └──► IF INJECTED TOO LOW / DEEP:
                               │              Diffusion through orbital septum
                               ▼              Paralyzes Levator Palpebrae Superioris
                   [EYELID PTOSIS / BLEPHAROPTOSIS] (2% to 3% risk)

Mechanism of Eyelid Ptosis

Blepharoptosis (upper eyelid droop) occurs when neurotoxin diffuses through the fibrous orbital septum into the levator palpebrae superioris muscle, which is responsible for elevating the upper eyelid.

• Clinical incidence: Reported at 3% in Botox glabellar trials and 2% (8 of 492) in Jeuveau trials.
• Onset: Typically appears 3 to 10 days following injection.
• Duration: Gradually resolves over 2 to 6 weeks as collateral neurotransmission restores muscle function.
• Medical Management: Prescribing apraclonidine 0.5% ophthalmic drops (an alpha-2 adrenergic agonist) stimulates Müller's muscle (a sympathetic eyelid elevator), temporarily lifting the drooping lid by 1 to 2 millimeters while the toxin metabolizes.

Crucial Injector Safety Guardrails

To prevent eyelid ptosis:

1. Maintain lateral corrugator injection sites at least 1.0 to 1.5 cm superior to the bony supraorbital rim.
2. Angle the needle point upward (cranially), away from the eye socket.
3. Inject the lateral points strictly into the superficial subdermal/intramuscular plane.
4. Place non-dominant finger pressure along the supraorbital margin during injection to act as a physical barrier against downward diffusion.
5. Instruct patients to avoid vigorously rubbing or massaging the glabella for 24 hours post-procedure.

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What Does Botox for 11s Cost?

Pricing for glabellar neurotoxin treatment depends on practitioner credentials, geographic region, and practice billing models.

                  [Cost Math for 20-Unit Glabellar Session]

   Pricing Model                     Average Rate              Total Glabella Cost
   ──────────────────────────────    ──────────────────────    ───────────────────
   Per-Unit Billing ($10/unit)       Value / Specials Rate     $200
   Per-Unit Billing ($15/unit)       National Median Rate      $300
   Per-Unit Billing ($25/unit)       Metro Specialist Rate     $500
   Flat Fee Per-Area Model           Single Aesthetic Zone     $250 – $450
   ASPS Physician Benchmark*         2023 Plastic Surgery Stat $697
   *(National member-surgeon benchmark across mixed multi-area treatment sessions)

1. Per-Unit Pricing: At standard market rates of $10 to $25 per unit, a full 20-unit glabellar treatment costs between $200 and $500. For a detailed overview of fee structures, see how Botox is priced per unit vs. per area.
2. "Baby Botox" Dosing Considerations: Some patients request lower unit volumes (e.g., 10 to 12 Units) to preserve subtle facial motion. While this reduces session cost, under-dosing below the FDA-approved 20-unit standard shortens duration to 6 to 8 weeks; see our guide on Baby Botox vs. Regular Botox and natural-looking Botox dosing.
3. Annual Maintenance Math: Because glabellar neurotoxin maintains peak results for 3 to 4 months, maintaining smooth 11 lines year-round requires approximately 3 treatment sessions annually, totaling $600 to $1,500 per year.

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Frequently Asked Questions

Can you get Botox just for your 11s?

Yes. Glabellar frown lines are an FDA-approved, standalone treatment zone. You can safely treat your 11 lines without injecting your forehead or crow's feet. Treating 11s alone often creates a natural, subtle medial brow lift because you relax the brow depressor muscles while leaving the forehead elevator muscle fully functional.

How many Botox units for frown lines?

The official FDA-approved label dose for BOTOX Cosmetic in the glabella is 20 Units total, divided into five injection points of 4 Units each (1 in the procerus, 2 in the medial corrugators, 2 in the lateral corrugators). Jeuveau, Xeomin, and Letybo also use 20 Units; Daxxify uses 40 Units; and Dysport uses 50 Units.

How much does Botox in your 11s cost?

A complete 20-unit glabellar treatment typically costs $200 to $500 based on standard per-unit pricing of $10 to $25 per unit. Flat per-area rates generally range from $250 to $450.

Why didn't my Botox get rid of my 11 lines?

If your 11 lines remain visible 2 to 4 weeks after injection, they are likely static wrinkles (creases etched permanently into the dermis from decades of skin folding and collagen loss). While Botox stops muscle movement, etched skin requires dermal resurfacing modalities such as prescription tretinoin, chemical peels, or fractional laser resurfacing.

How long does Botox for 11s last?

In FDA clinical trials, line smoothing peaked at Day 30 (80% response rate), remained strong at Day 60 (70%), and gradually diminished by Day 90 (48%) and Day 120 (25%). Most patients schedule maintenance retreatment every 3 to 4 months.

Is every neurotoxin FDA-approved for frown lines?

Yes. All six aesthetic botulinum toxin type A products approved in the United States—BOTOX Cosmetic, Jeuveau, Xeomin, Dysport, DAXXIFY, and LETYBO—are FDA-approved on-label for moderate to severe glabellar frown lines.

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Sources

• DailyMed — BOTOX Cosmetic (onabotulinumtoxinA) Prescribing Information (FDA-Approved Label): https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=485d9b71-6881-42c5-a620-a4360c7192ab
• DailyMed — JEUVEAU (prabotulinumtoxinA-xvfs) Prescribing Information (FDA-Approved Label): https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=17a914c1-e54b-4b50-965d-b0fd9111bba4
• DailyMed — XEOMIN (incobotulinumtoxinA) Prescribing Information (FDA-Approved Label): https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=3f35d6e0-3450-4abc-a0da-cc7b277e7c6e
• DailyMed — DYSPORT (abobotulinumtoxinA) Prescribing Information (FDA-Approved Label): https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=71313a04-1349-4c26-b840-a39e4a3ddaed
• DailyMed — DAXXIFY (daxibotulinumtoxinA-lanm) Prescribing Information (FDA-Approved Label): https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=3aaa6e14-a3f7-4fb2-b9f9-d3a9c3ae1f74
• DailyMed — LETYBO (letibotulinumtoxinA-wlbg) Prescribing Information (FDA-Approved Label): https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=910e5d0e-4d0b-4de8-8e2d-97879a044181
• American Society of Plastic Surgeons — 2023 Plastic Surgery Statistics Report: https://www.plasticsurgery.org/cosmetic-procedures/botulinum-toxin
• StatPearls — Botulinum Toxin Injections for Glabellar Lines: https://www.ncbi.nlm.nih.gov/books/NBK557387/