Botox vs Dysport: Onset, Longevity, Cost, and How to Choose in 2026

If you’re considering wrinkle injections, you’ll quickly run into the question: Botox or Dysport? They’re both botulinum toxin type A. They both work in the same general way. They both cost roughly the same per area treated. But the formulations are different, the units don’t translate one-to-one, and clinicians often have a preference about when to use which.

This guide breaks down what’s actually different — onset, longevity, spread, dosing, cost — in plain terms, with a comparison table you can scan in 30 seconds. For a wider view of all four FDA-approved neurotoxins (Botox, Dysport, Xeomin, Daxxify), see our neurotoxins guide.

The short version: Botox and Dysport are both botulinum toxin type A but with different formulations. Dysport tends to start working faster (2-3 days vs 5-7 for Botox), spreads slightly more (which is a pro for large areas like the forehead and a con for precision zones like crow’s feet), and uses different units – roughly 2.5-3 Dysport units equal 1 Botox unit. Longevity is similar at 3-4 months. Cost per treated area is comparable when measured by result, not unit. The right brand depends on what you’re treating and how much movement you want to keep.

What are Botox and Dysport, and how are they similar?

Both Botox (onabotulinumtoxinA) and Dysport (abobotulinumtoxinA) are FDA-approved injectable medications that contain botulinum toxin type A. Both temporarily block the nerve signal that tells a muscle to contract, which softens dynamic wrinkles and prevents new lines from etching deeper into the skin.

Both are approved for glabellar lines (the “11s” between the brows). Both have a long safety record and are widely used off-label for forehead lines, crow’s feet, masseter slimming, and other facial muscle targets. Both wear off over 3–4 months as nerves form new connections.

FDA approval history:

• Botox Cosmetic: Approved by the FDA for cosmetic glabellar lines in 2002, then forehead lines in 2017 (FDA Botox information).
• Dysport: Approved by the FDA in 2009 for glabellar lines (FDA Dysport prescribing information).

How are Botox and Dysport different?

The differences come from the way each product is formulated. Each toxin molecule is wrapped in different “accessory proteins” that influence diffusion, onset, and how the medication is dosed.

Why does Dysport feel “faster”?

Dysport molecules are smaller on average and the formulation contains different accessory proteins. The result is faster onset — most patients notice softening within 48–72 hours of injection, versus 5–7 days for Botox.

For someone whose primary goal is “I have an event in 10 days and I want this to look good in time,” Dysport is the safer pick because peak effect arrives sooner. For someone with no time pressure, the difference is meaningless — both products will be at peak effect by 2 weeks.

What about spread? Why does that matter?

Each injection of botulinum toxin diffuses out from the puncture site into surrounding tissue. Dysport spreads slightly more per injection than Botox does. This is sometimes framed as a flaw, but in practice it’s neutral — it’s just a feature that suits certain treatment zones better than others.

Where wider spread helps:

• Forehead, where smooth coverage across a broad muscle is desirable
• Hyperhidrosis (sweat reduction) under the arms — broad area, large muscle/gland coverage
• Some clinicians prefer Dysport for first-time patients in the forehead because the smoother coverage is easier to achieve

Where tighter precision helps:

• Crow’s feet, where the orbicularis oculi sits very close to other muscles you don’t want to affect
• Lip lines, where diffusion to nearby muscles can cause unwanted lip droop or asymmetry
• Bunny lines and other small, precise zones where you want the toxin to stay exactly where you put it

Skilled injectors can use either product anywhere — they adjust technique (number of injection points, dilution, dosing) to get the result. The difference matters most for new injectors and for forgiving anatomy.

How does the unit conversion work?

This is the question that confuses most patients. Botox and Dysport units are not the same. A “unit” of either product is defined by its potency in a lab assay, but the assays are different and the molecules behave differently.

The clinical conversion ratio most often cited is roughly 2.5 to 3 units of Dysport per 1 unit of Botox. So if you’d take 20 units of Botox in your glabella, the equivalent Dysport dose is roughly 50–60 units. Some clinicians use 2.5:1 as a baseline and adjust to patient response; the FDA-approved Dysport dose for glabellar lines is 50 units total across five injection points.

Why this matters: do not compare per-unit prices directly. A clinic charging $12/unit for Botox and another charging $5/unit for Dysport are not necessarily charging different amounts for equivalent treatment. The honest comparison is per area treated. A “Dysport is cheaper” claim based on unit price alone is marketing, not math.

Which one lasts longer?

For most patients, longevity is similar — 3 to 4 months. Some studies and clinical experience suggest Dysport may last marginally longer at the glabella, while Botox may have an edge for crow’s feet, but the differences are small and patient-dependent. Strong individual factors (muscle size, metabolism, exercise habits) outweigh brand differences.

If duration is your top priority, neither Botox nor Dysport is the longest-lasting option in 2026 — that’s Daxxify (daxibotulinumtoxinA), which has shown sustained effect at 6 months in some patients in clinical trials. We cover the four-toxin landscape in our neurotoxins guide.

How much does each cost in Orange County?

Per-unit pricing in OC typically lands at:

• Botox: $12–$18 per unit
• Dysport: $4–$7 per unit

Per-area treatment cost (using moderate dosing):

• Glabella (“11s”) with Botox: 20 units × ~$15 = $300
• Glabella (“11s”) with Dysport: 50 units × ~$5 = $250
• Forehead full upper face: $400–$600 either product
• Crow’s feet (both sides): $250–$400 either product

Final price tags can vary 10–20% between brands depending on the clinic’s purchasing and the loyalty program tier you’re in. Allē (for Botox/Juvederm) and Aspire (for Dysport/Restylane/Sculptra) both offer point accumulation programs that effectively reduce cost over time.

Who should choose Botox vs Dysport?

Choose Botox if:

• You’re treating precision zones (crow’s feet, lip lines, bunny lines)
• You’re already in the Allē rewards program with substantial points
• You’ve used Botox before and have predictable results — switching brands is reasonable but not required
• You’re doing masseter Botox where high-dose precision into a deep muscle matters

Choose Dysport if:

• You have an event in 7–10 days and want fastest onset
• You’re treating a large, broad area like the forehead and want smooth coverage
• You’ve developed Botox resistance (rare, but documented in some long-term users — Dysport’s different formulation may still work)
• You’re already in the Aspire rewards program

For most patients, the difference between Botox and Dysport is smaller than the difference between a great injector and a mediocre one. Pick the injector first; pick the brand second. For specific area dosing, see our guides on Botox for forehead lines and masseter Botox.

What are the side effects of each?

The side effect profiles are nearly identical because both are botulinum toxin type A. Common effects:

• Pinpoint bruising or mild swelling at injection sites
• Brief headache the day of treatment
• Temporary asymmetry — usually resolves with a touch-up at 2 weeks

Less common:

• Eyelid ptosis (drooping upper eyelid) — rare, related to toxin diffusion to nearby muscles, resolves over weeks
• Brow drop / heaviness — usually a dosing or planning issue, resolves as the toxin wears off
• Allergic reactions — rare

Per FDA prescribing information for both products, the most common adverse reactions include local injection-site reactions and headache (FDA Botox information; FDA Dysport prescribing information).

Can I switch from Botox to Dysport (or vice versa)?

Yes. There’s no required washout period between brands, and many patients alternate based on what’s available, what their loyalty program offers, or what their injector recommends for a specific zone. The first treatment with a new brand may feel slightly different — different onset speed, possibly slightly different duration — but most patients adapt within one or two cycles.

If you’re switching because you weren’t happy with the previous result, talk to your injector about whether the issue was the brand or the technique. Often the answer is the latter. The most common reasons patients give for “Botox didn’t work for me” usually trace back to under-dosing, suboptimal injection placement, or unrealistic expectations about what was achievable in a particular muscle pattern — not to product brand failure.

What about Xeomin and Daxxify? Are those alternatives?

Botox and Dysport are the two most-asked-about brands, but they’re not the only choices. The other two FDA-approved botulinum toxin type A injectables are worth knowing about even if you’re focused on the Botox vs Dysport question.

• Xeomin (incobotulinumtoxinA) — sometimes called “naked Botox” because it’s purified to remove the accessory proteins that surround the toxin in Botox and Dysport. Theoretically lower risk of antibody formation in long-term users. FDA-approved for glabellar lines in 2011. Onset and longevity are similar to Botox.
• Daxxify (daxibotulinumtoxinA) — the newest entrant, FDA-approved for glabellar lines in 2022. Notable for longer duration in clinical trials, with effect persisting at 6 months in many patients (versus 3-4 months for the older brands). Premium pricing reflects the longer interval between treatments.

For the patient deciding between products today, Botox and Dysport remain the most-prescribed options. Xeomin makes sense for patients with documented antibody-related treatment failure on other brands. Daxxify makes sense for patients prioritizing longer intervals between visits and willing to pay more per session for that benefit.

How do I prepare for my first appointment?

A few practical steps that improve outcomes for either brand:

• Avoid blood-thinning medications when medically safe. Aspirin, ibuprofen, fish oil, and high-dose vitamin E increase bruising risk. Skip these for 3–5 days before treatment if your physician approves. Never stop prescription blood thinners without medical guidance.
• Skip alcohol for 24 hours before injection. It increases bleeding and bruising likelihood at injection sites.
• Come with photos of results you like — and don’t like. Visual references help your injector understand whether you want a softened-but-still-moving look or a more aggressive smoothing.
• Plan ahead for events. If you have a wedding, photo shoot, or important social commitment, book treatment at least 2 weeks before for Botox or 10 days before for Dysport so the result is fully expressed and any small touch-ups are possible.
• Tell your injector about all medications and supplements. Some can affect outcomes or bruising. Aminoglycoside antibiotics and certain neuromuscular drugs are particularly important to flag.

FAQ

Medically reviewed by clinical staff at OC Weight Loss and Medspa. Last updated May 2026.

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If you’re in Mission Viejo or anywhere in south Orange County deciding between Botox and Dysport, the right call depends on which area you’re treating, how fast you want results, and what your goals are. A consultation should walk through both options before quoting a treatment plan. Visit our neurotoxins service page or learn about our team at who we are.

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