Botox vs Dysport: Differences, Cost, Results, Side Effects & Which Is Better?

Botox and Dysport both reduce muscle activity that creates dynamic facial wrinkles, but the 2 injectable treatments are not interchangeable. Botox has broader FDA-approved cosmetic indications, while Dysport is FDA-approved for glabellar lines. Their doses, units, onset, duration, and treatment plans also differ.

Botox injections contain onabotulinumtoxinA, while Dysport contains abobotulinumtoxinA. Both belong to the botulinum toxin type A drug class and reduce muscle contraction by inhibiting acetylcholine release at targeted neuromuscular junctions.

For patients considering Botox treatment in NYC, the choice between Botox and Dysport still depends on the treatment area, facial anatomy, muscle strength, previous neurotoxin response, desired facial movement, product-specific dose, and medical history. Neither product is universally better for every patient or facial area.

As of September 2026, current U.S. prescribing information lists Botox for glabellar lines, lateral canthal lines, forehead lines, and platysma bands. Dysport’s cosmetic FDA indication covers moderate-to-severe glabellar lines in adults younger than 65.

What Is the Main Difference Between Botox and Dysport?

The main difference between Botox and Dysport involves their formulations, product-specific potency units, FDA-approved cosmetic indications, and labeled doses. Both use botulinum toxin type A activity to decrease muscle contraction, so their basic mechanism is similar even though the products are not interchangeable.

Botox contains onabotulinumtoxinA; Dysport contains abobotulinumtoxinA. Both treatments interrupt acetylcholine release at targeted neuromuscular junctions, which decreases the contraction of facial muscles responsible for movement-related lines. FDA approval creates a major difference. Botox currently has aesthetic indications for glabellar lines, forehead lines, lateral canthal lines, and platysma bands. 

Dysport has a U.S. aesthetic indication for glabellar lines. Botox and Dysport also use separate potency measurements. A Botox unit does not equal a Dysport unit. Both prescribing labels state that their biological activity units cannot be converted into units of another botulinum toxin product.

What Are Botox and Dysport and How Do They Work?

Botox and Dysport are prescription botulinum toxin type A injections that reduce targeted muscle contraction. Botox contains onabotulinumtoxinA, while Dysport contains abobotulinumtoxinA. Both inhibit acetylcholine release from motor nerves, decreasing muscle activity that repeatedly folds the overlying skin.

Acetylcholine is a neurotransmitter involved in signaling between nerves and muscles. Botulinum toxin type A interferes with acetylcholine release at the treated neuromuscular junction. Reduced nerve signaling decreases contraction within the injected muscle.

Dynamic facial wrinkles develop through repeated muscle movement. Glabellar lines form through corrugator and procerus activity. Forehead lines form through frontalis activity. Crow’s feet develop through orbicularis oculi contraction.

Botox and Dysport treat the muscle-driven component of these wrinkles. Neither product restores lost facial volume or replaces tissue. Lines caused primarily by volume loss, tissue descent, or skin laxity require a different assessment.

Which Areas Are Botox and Dysport FDA-Approved to Treat?

Botox has more FDA-approved aesthetic treatment areas than Dysport in the United States. Botox is approved for glabellar lines, forehead lines, lateral canthal lines, and platysma bands. Dysport is FDA-approved for moderate-to-severe glabellar lines in adults younger than 65.

Botox’s current prescribing information connects each approved treatment with specific muscle activity. Glabellar lines involve the corrugator and procerus muscles. Lateral canthal lines involve the orbicularis oculi. Forehead lines involve the frontalis. Platysma bands involve the platysma muscle.

Off-label use means an FDA-approved drug is being used outside a specific indication listed in its prescribing information. Off-label aesthetic uses include areas such as bunny lines, the masseter, chin, lip flip, and gummy smile.

FDA approval and off-label use therefore need to be considered separately when comparing Botox and Dysport for a specific facial area.

How Many Units of Botox vs Dysport Are Needed?

Botox and Dysport require different product-specific doses. The FDA-approved Botox dosage for glabellar lines is 20 units, while Dysport uses 50 units. These doses do not establish a universal conversion ratio because Botox and Dysport potency units are measured using different product-specific assays.

Current FDA-labeled cosmetic doses provide the clearest comparison:

Botox uses 20 units for glabellar lines, divided across 5 injection sites. Dysport uses 50 units for glabellar lines, divided into 5 injections containing 10 units each. Clinical studies test Dysport-to-Botox dose ratios, including ratios near 2.5:1 and 3:1. Published dose comparisons do not create an official conversion formula. FDA labeling specifically states that Botox and Dysport units cannot be compared with or converted into each other.

Off-label treatment doses require individualized planning because FDA labeling does not establish cosmetic Dysport doses for areas such as the forehead, crow’s feet, masseter, bunny lines, chin, or lip flip.

Muscle strength, facial anatomy, treatment objective, previous response, and injection pattern determine the Botox dosage or Dysport dose used for an individual treatment.

Which Treatment Areas Use Botox vs Dysport?

Botox and Dysport overlap most directly in glabellar-line treatment because both products have FDA approval for this area. Botox also has FDA-approved cosmetic indications for forehead lines, crow’s feet, and platysma bands. Dysport use in those additional aesthetic areas is off-label in the United States.

Botox vs Dysport for 11 Lines

Glabellar or “11” lines develop between the eyebrows through corrugator and procerus muscle contraction. Botox and Dysport both temporarily reduce this muscle activity and are FDA-approved for moderate-to-severe glabellar lines. The labeled dose is 20 Botox units or 50 Dysport units, but these units are not interchangeable. Both begin working within the first few days, with results developing over approximately 1–2 weeks.

The most important differences are the product-specific dose, your muscle strength and movement pattern, and the injector’s technique. Neither product is automatically more precise or guaranteed to spread farther; results depend on dose, injection placement, muscle anatomy, and treatment goals. Botox also has FDA-approved indications for forehead lines and crow’s feet, while Dysport use outside the glabella is off-label in the United States.

Botox vs Dysport for Forehead Lines

Forehead lines develop through repeated contraction of the frontalis muscle. Botox is FDA-approved for moderate-to-severe forehead lines when the forehead and glabellar areas are treated together. The labeled regimen uses 20 units in the forehead and 20 units in the glabella, for 40 total units. Dysport treatment of cosmetic forehead lines is off-label in the United States. Forehead treatment requires careful assessment of brow position, frontalis strength, and existing eyelid or brow heaviness because the frontalis contributes to eyebrow elevation.

Botox vs Dysport for Crow’s Feet

Crow’s feet form around the outer corners of the eyes through repeated orbicularis oculi contraction. Botox has an FDA-approved lateral canthal line indication. The labeled dose is 24 units total, with 12 units administered on each side. Dysport treatment around the lateral eye area is an off-label aesthetic use in the United States.

Botox vs Dysport for Platysma Bands

Platysma bands develop through visible contraction of the platysma muscle in the neck. Botox is FDA-approved for moderate-to-severe platysma bands. Current labeling uses 26, 31, or 36 total units, depending on the number of treated vertical bands. Dysport does not currently have a U.S. cosmetic indication for platysma bands.

What Other Areas Are Treated Off-Label?

Botox and Dysport are also used off-label for cosmetic areas, including bunny lines, masseter muscles, chin dimpling, downward mouth corners, gummy smile, and lip-flip treatment. Off-label dosing and placement depend on the specific muscle rather than a universal facial dosing chart.

Does Dysport Work Faster Than Botox?

Yes, Dysport starts working faster than Botox in some clinical studies, with an initial effect appearing in about 2 days. Botox also begins reducing muscle activity within the first few days, but Dysport shows an earlier initial response in certain head-to-head comparisons.
A phase 3 study involving 520 patients compares 50 units of Dysport with 20 units of Botox for moderate-to-severe glabellar lines. Dysport produces a median onset of approximately 2 days and remains non-inferior to Botox for the study’s primary efficacy endpoint. Botox also begins acting within the first few days after injection. Botox reduces acetylcholine release at the treated neuromuscular junction, which decreases contraction of the targeted muscles. The visible cosmetic result continues to develop as muscle activity declines.

Dysport’s faster onset refers to the first noticeable treatment effect, not the full result. Both Botox and Dysport continue developing after treatment, and the time to full results depends on the dose, targeted muscle, injection pattern, baseline muscle activity, and individual response. A faster initial response does not mean Dysport produces stronger results or lasts longer than Botox. Onset and duration are separate treatment characteristics.

What Do Botox vs Dysport Before and After Results Look Like?

Dysport and Botox before-and-after results show decreased movement in targeted muscles and softer dynamic facial lines. The visible result depends on the treatment area, baseline wrinkle depth, dose, injection pattern, anatomy, and retained muscle activity rather than the product brand alone.

Before treatment, glabellar lines deepen when a patient frowns because the corrugator and procerus muscles contract. After effective Botox or Dysport treatment, contraction decreases and the same frown produces less skin folding between the eyebrows.

Before treatment, forehead lines become more visible during eyebrow elevation. After treatment, reduced frontalis activity softens horizontal movement-related lines. Botox has an FDA-approved forehead indication, while Dysport forehead treatment remains off-label in the United States.

Before treatment, crow’s feet deepen during smiling or squinting. After targeted neurotoxin treatment, decreased orbicularis oculi activity reduces the movement responsible for these lateral eye lines. Botox is FDA-approved for this indication.

A natural-looking result retains enough facial movement to preserve expression while reducing unwanted muscle activity. A “frozen” appearance is not an inherent property of Botox or Dysport. Dose, muscle selection, injection placement, and individual anatomy influence how much movement remains.

Static lines can remain visible after successful treatment when the skin has developed deeper creasing at rest. Botox and Dysport decrease muscle activity but do not replace lost volume or directly reverse every structural skin change.

Which Lasts Longer, Botox or Dysport?

Botox lasts approximately 3–4 months for glabellar lines, while Dysport can last up to 4 months. Neither product consistently lasts longer than the other, and current evidence does not establish a universal duration advantage for Botox or Dysport.

The Botox duration for glabellar-line treatment is approximately 3–4 months, according to prescribing information. The Dysport duration for glabellar-line treatment can extend up to 4 months, according to Dysport prescribing information.

Treatment duration also depends on muscle strength, treatment area, product-specific dose, injection pattern, previous treatment response, and individual response. As neuromuscular signaling returns, muscle movement gradually increases and facial lines become more noticeable again.

Does Dysport Spread More Than Botox?

Dysport cannot be accurately described as universally spreading farther simply because of a smaller molecular complex. Research shows that botulinum toxin distribution depends on dose, concentration, injection volume, placement, and technique. Comparative evidence does not establish wider Dysport spread as an automatic result in every treatment.

The common explanation that Dysport “has smaller molecules and therefore spreads farther” oversimplifies botulinum toxin behavior. A published review finds that molecular weight and complexing proteins do not appear to determine diffusion. Injection volume, concentration, and dose influence toxin distribution.

Clinical administration adds other factors, including injection location, number of injection points, muscle size, and technique.

A product therefore does not independently determine whether treatment looks precise, broad, soft, or natural. Dose selection, placement, facial anatomy, and administration technique influence the clinical area affected.

How Much Do Botox and Dysport Cost?

Botox costs in NYC about $10–$20 per unit, while Dysport costs about $4–$8 per unit. Because Botox and Dysport use different product-specific potency units, these prices cannot be compared directly. The total cost depends on the treatment area, product-specific dose, number of areas treated, and the clinic’s pricing.

These are general estimated ranges, not fixed treatment prices. Botox and Dysport doses are not interchangeable, so a lower advertised price per unit does not necessarily mean a lower total treatment cost.

A patient comparing Botox and Dysport should compare the complete treatment quote for the same anatomical goal, including the product, estimated dose, treatment area, and number of areas treated.

At Dr. Syra Aesthetics, treatment planning includes an estimated number of units and pricing based on the selected product and treatment plan before injections are performed.

Is Dysport Cheaper Than Botox?

Not necessarily. While Dysport looks cheaper at first glance, once the unit conversion is taken into account, the overall cost for a treatment session is often comparable to Botox. Some patients may notice Dysport working out slightly more cost-effective in larger treatment areas (like the forehead), while Botox may be more predictable in smaller, highly targeted areas (like crow’s feet). Ultimately, the total price depends on the area treated, your goals, and your provider’s pricing model.

Do Botox and Dysport Have Different Side Effects?

Botox and Dysport share botulinum toxin side effects, including injection-site reactions, headache, eyelid ptosis, and unintended weakness in nearby muscles. The exact reported rates differ between product trials, so adverse-event percentages from separate Botox and Dysport studies cannot be treated as direct head-to-head comparisons.

Botox trials report adverse reactions according to the treated area. Current labeling includes eyelid ptosis after glabellar treatment and brow ptosis after forehead treatment.

Dysport glabellar-line trials list reactions including headache, injection-site pain, injection-site reactions, eyelid edema, and eyelid ptosis. Higher Dysport doses in clinical trials are associated with a higher incidence of eyelid ptosis.

Botox and Dysport both carry boxed warnings concerning the distant spread of botulinum toxin effects. Symptoms involving swallowing, speaking, or breathing require immediate medical attention.

Dysport also has a specific contraindication for hypersensitivity to cow’s milk protein and can contain trace amounts of cow’s milk protein. Cow’s milk protein allergy is different from lactose intolerance.

Which Is Safer, Botox or Dysport?

Current evidence does not establish Botox or Dysport as universally safer for every cosmetic patient. Both products carry botulinum toxin warnings and require correct patient selection, dosing, anatomical placement, and administration. Product-specific contraindications and the intended treatment area influence the individual safety assessment.

Botox is contraindicated in patients with hypersensitivity to botulinum toxin preparations or formulation components and in patients with infection at a proposed injection site.
Dysport is contraindicated in patients with hypersensitivity to botulinum toxin products, cow’s milk protein, or its formulation components, as well as patients with infection at proposed injection sites.

Neuromuscular disorders, medications that interfere with neuromuscular transmission, previous reactions to botulinum toxin, facial anatomy, and the planned treatment area require clinical review before either product is administered.

Safe treatment depends on both the selected product and how the treatment is planned and performed.

Who Is a Good Candidate for Botox or Dysport?

Botox and Dysport are primarily considered for adults with muscle-driven facial lines who meet the medical requirements for botulinum toxin treatment. Product choice depends on the treatment area, muscle strength, facial anatomy, previous neurotoxin response, desired movement, medical history, and FDA-labeled indication.

Dynamic facial lines become more visible with expression. Common examples include 11 lines during frowning, forehead lines during eyebrow elevation, and crow’s feet during smiling or squinting.

Facial assessment also considers asymmetry, brow position, eyelid position, skin creasing at rest, and previous treatment response. Dysport prescribing information specifically advises caution when treating patients with marked facial asymmetry, ptosis, deep dermal scarring, or other anatomical factors affecting glabellar treatment.

Skin oiliness alone does not determine whether Botox or Dysport is the more appropriate product. The treatment acts at the neuromuscular junction rather than targeting sebum production.

Patients with contraindications or conditions that increase treatment risk require a different plan or exclusion from treatment based on clinical assessment.

Why Does Botox or Dysport Sometimes Stop Working?

A Botox or Dysport treatment that feels weaker or wears off sooner does not automatically mean the body has developed resistance. Dose, muscle targeting, injection placement, anatomy, previous response, treatment interval, product handling, and true secondary nonresponse represent different explanations that require separate evaluation.

Treatment response can change when a different dose is used, a different muscle is targeted, injection placement changes, or facial muscle activity differs from a previous visit.
Neutralizing antibodies represent one possible explanation for secondary nonresponse, but available onabotulinumtoxinA data show a low occurrence.

Can You Switch From Botox to Dysport?

Switching from Botox to Dysport or from Dysport to Botox is possible after clinical evaluation. A switch requires a new dosing plan because the products use separate potency units. Previous Botox units cannot simply be multiplied by a fixed number to determine the correct Dysport dose.

Treatment history becomes important before switching products. The clinician needs to know which product is previously used, how many product-specific units are injected, which areas are treated, how quickly results develop, how long the result lasts, and whether adverse reactions occur.

Botox and Dysport labeling both state that their potency units are not interchangeable.
A switch therefore represents a new treatment decision rather than a mathematical conversion of the previous dose.

Does the Injector Matter When Choosing Botox or Dysport?

The injector influences Botox and Dysport results through muscle selection, dose, injection placement, concentration, volume, and anatomical assessment. The brand alone does not determine precision, symmetry, natural movement, or unwanted weakness. Correct treatment planning remains important with either botulinum toxin product.
Botox prescribing information states that safe and effective use depends on proper storage, correct dose selection, reconstitution, administration technique, and knowledge of relevant neuromuscular and structural anatomy.

Dysport prescribing information also emphasizes facial anatomy and warns that higher tested doses increase eyelid ptosis in glabellar treatment trials.
Research on botulinum toxin diffusion further shows that injection volume, dose, concentration, and technique influence the affected area.

A patient comparing Botox and Dysport therefore benefits from knowing the exact product, treatment area, product-specific dose, expected evaluation point, and whether the planned use is FDA-approved or off-label.

How Does Dr. Syra Hanif Choose Between Botox and Dysport?

Dr. Syra Hanif evaluates facial movement, muscle strength, facial symmetry, treatment area, medical history, previous injectable treatment, and aesthetic goals before selecting Botox or Dysport. The treatment plan also identifies the target areas, estimated product-specific dose, expected response, and pricing before treatment.

Facial movement is assessed during expressions, including eyebrow elevation, frowning, smiling, squinting, and facial relaxation. The assessment identifies which muscles create the visible lines and how strongly those muscles contract.

Previous treatment history adds important information. A previous Botox or Dysport treatment can be reviewed according to product, dose, onset, duration, retained facial movement, and adverse reactions.

At Dr. Syra Aesthetics, Dr. Syra Hanif’s current consultation process includes assessment of facial movement, muscle strength, symmetry, previous injectable history, medical background, medications, allergies, and treatment goals.

Product selection follows that assessment rather than relying on a fixed rule that Botox is always more precise or Dysport always spreads farther.

Which Is Better for You: Botox or Dysport?

Neither Botox nor Dysport is universally better. The better choice depends on how quickly you want results, the treatment area, total treatment cost, expected duration, previous response, and the injector’s technique. Botox also has broader FDA-approved cosmetic indications in the United States.

Molecular Spread and Diffusion

Botox and Dysport do not have a proven universal difference in diffusion based simply on molecular weight. Research shows that dose, concentration, injection volume, placement, and injection technique influence how far botulinum toxin activity extends from the injection site. Molecular weight and complexing proteins do not appear to determine diffusion by themselves.

Dysport therefore is not automatically better for broad areas, and Botox is not automatically more precise for small areas. The clinical treatment field depends on how the product is prepared and injected, along with the size and position of the targeted muscle.

Speed of Onset

Dysport shows a rapid initial response in clinical studies. A phase 3 study involving 520 patients reports a median Dysport onset of approximately 2 days for glabellar lines.

Botox also begins acting quickly. Botox Cosmetic prescribing information states that glabellar treatment produces initial chemical denervation within approximately 1–2 days, with the effect increasing during the first week.

Dysport therefore has evidence for an early onset, but Botox does not require 5–7 days before any effect begins. Initial onset and full cosmetic results are separate treatment stages.

Cost Per Treatment

Botox and Dysport use different product-specific potency units, so price per unit does not provide a direct cost comparison. Dysport prescribing information specifically states that its units cannot be compared with or converted into Botox units.

Clinical studies use Dysport-to-Botox dose ratios, including ratios around 2.5:1 to 3:1, but these ratios do not establish an official conversion formula. The most useful comparison is the total quoted cost for the same treatment area and treatment goal.

Duration and Longevity

Botox and Dysport both provide temporary cosmetic results. Botox Cosmetic prescribing information describes glabellar-line effects as lasting approximately 3–4 months, while Dysport treatment for glabellar lines remains effective for up to about 4 months in clinical studies.

Treatment duration also depends on muscle strength, product-specific dose, treatment area, injection pattern, previous response, and individual response. Neither product consistently lasts longer for every patient.

Provider Technique

Provider technique remains one of the most important factors in Botox and Dysport treatment. Accurate muscle selection, dose, injection depth, placement, concentration, and volume influence the treatment field and the amount of muscle activity that remains after injection.

Botox Cosmetic prescribing information specifically emphasizes correct dose selection, accurate injection placement, and knowledge of facial anatomy. Research on botulinum toxin diffusion also identifies dose, dilution, volume, and technique as major factors affecting spread.

Botox has broader FDA-approved cosmetic indications, including glabellar lines, forehead lines, crow’s feet, and platysma bands. Dysport is FDA-approved cosmetically for moderate-to-severe glabellar lines in adults younger than 65. The final choice therefore depends on the treatment area, previous response, desired onset, total cost, and the treatment plan rather than one product being universally superior.

Botox vs Dysport vs Xeomin: Which Is Best for Wrinkles?

When it comes to treating wrinkles, Botox, Dysport, and Xeomin are all effective, but each has unique advantages:

• Botox – The most well-known and widely used option. It’s versatile, FDA-approved for multiple areas (forehead, crow’s feet, frown lines), and delivers consistent, reliable results. Best for patients who want a trusted, time-tested treatment.
• Dysport – Works faster in some cases (results may appear in 2–3 days vs. Botox’s 5–7 days) and spreads more easily, making it especially effective for larger areas like the forehead. Best for patients seeking quicker results or broader coverage.
• Xeomin – Known as the “naked injectable” because it doesn’t contain accessory proteins. This means there’s less risk of developing resistance over time. Best for patients who want a more purified formula or who’ve stopped responding to Botox or Dysport.

Can Dysport Be Reversed?

No, Dysport cannot be directly reversed after injection. Unlike hyaluronic acid fillers, Dysport has no enzyme that immediately dissolves or removes its effect. Dysport temporarily reduces muscle activity, and the effect gradually decreases as neuromuscular signaling returns over the following months.

If Dysport produces unwanted effects, including asymmetry, excessive muscle weakness, or eyelid ptosis, treatment focuses on managing the specific complication while the botulinum toxin effect wears off. Dysport prescribing information documents temporary effects rather than an immediate reversal method.

Daxxify vs Dysport: What Is the Difference?

Daxxify and Dysport are botulinum toxin type A injections used for glabellar lines, but they contain different formulations, use non-interchangeable units, and have different duration data. Daxxify uses 40 FDA-labeled units for glabellar lines, while Dysport uses 50 units.

Daxxify contains daxibotulinumtoxinA-lanm, while Dysport contains abobotulinumtoxinA. Both reduce acetylcholine release and decrease contraction of the corrugator and procerus muscles responsible for glabellar lines. Their potency units cannot be directly compared or converted.

Daxxify phase 3 studies report a median duration of approximately 24 weeks for maintaining none or mild glabellar lines. Dysport clinical research reports a median duration of approximately 107–109 days, or about 3.5 months, under the study’s response criteria. These values come from separate clinical trials rather than a direct Daxxify-versus-Dysport head-to-head study.

The choice between Daxxify and Dysport depends on the treatment goal, previous neurotoxin response, desired treatment interval, facial anatomy, product-specific dose, and injector assessment.

Frequently Asked Questions About Botox vs Dysport

Is 50 Units of Dysport the Same as 20 Units of Botox?

No. Fifty Dysport units and 20 Botox units are the respective FDA-labeled doses for glabellar lines, but they are not equivalent units. Each product uses its own potency assay, and FDA labeling states that their biological activity units cannot be directly converted.

Does Dysport Look More Natural Than Botox?

Neither Dysport nor Botox inherently produces a more natural appearance. The amount of retained movement depends on the product-specific dose, injection locations, target muscles, facial anatomy, and treatment goal. Either product can produce subtle movement or excessive restriction when the treatment plan changes.

Can Dysport Work if Botox Stopped Working?

Dysport can be considered after an inadequate Botox response, but a weak Botox result does not automatically mean Dysport will perform better. Dose, injection placement, target muscle, treatment timing, previous response, and possible secondary nonresponse need to be evaluated before switching products.

Why Does My Botox or Dysport Wear Off Faster This Time?

A shorter result can reflect changes in dose, target muscle activity, treatment area, injection pattern, previous treatment history, or the point at which the result is evaluated. A single short-lasting treatment does not prove resistance to Botox or Dysport.

Can You Become Resistant to Botox or Dysport?

Neutralizing antibodies can reduce the biological response to botulinum toxin, but antibody-related secondary nonresponse is uncommon in available onabotulinumtoxinA registration data. A meta-analysis finds neutralizing antibodies in 27 of 5,876 evaluable subjects, equal to approximately 0.5%.