Botox vs Dysport vs Xeomin: Which Neurotoxin Is Best?

Botulinum toxin type A — commonly known by brand names like Botox, Dysport, and Xeomin — is the single most popular cosmetic procedure performed worldwide. According to the American Society of Plastic Surgeons, more than 9 million botulinum toxin treatments are administered annually in the United States alone, a figure that continues to climb year over year.

Yet for many patients walking into a consultation for the first time, the choice between these three FDA-approved neurotoxins can feel opaque. Are they truly interchangeable? Does one work faster, last longer, or spread more than another? And does the price difference actually reflect a difference in quality?

This article unpacks the science, clinical data, and practical differences between Botox (onabotulinumtoxinA), Dysport (abobotulinumtoxinA), and Xeomin (incobotulinumtoxinA) so you can have a more informed conversation with your provider.

The Basics: What Are Neurotoxins and How Do They Work?

All three products contain botulinum toxin type A, a purified protein derived from the bacterium Clostridium botulinum. When injected in tiny, controlled doses into specific facial muscles, the toxin temporarily blocks the release of acetylcholine — the neurotransmitter responsible for muscle contraction. The targeted muscle relaxes, softening the overlying wrinkle.

The National Institutes of Health (NIH) describes botulinum toxin as one of the most potent biological substances known, yet its safety profile in cosmetic doses has been well established through decades of clinical use. Neurotoxins are a cornerstone of modern full face rejuvenation protocols.

All three neurotoxins are FDA-approved for the treatment of moderate to severe glabellar lines (the “11s” between the brows). Botox has the broadest range of FDA-approved cosmetic indications, including crow’s feet and forehead lines, though all three are used off-label across the face and body.

Head-to-Head Comparison

Botox (OnabotulinumtoxinA)

Manufacturer: Allergan (AbbVie) FDA Cosmetic Approval: 2002 (glabellar lines), 2013 (crow’s feet), 2017 (forehead lines)

Botox is the original cosmetic neurotoxin and remains the most widely recognized brand worldwide. It contains the 900-kilodalton botulinum toxin complex, which includes the active neurotoxin along with complexing proteins.

Key characteristics:

• Onset: 3-5 days, with full effect at 10-14 days
• Duration: Typically 3-4 months
• Diffusion: Relatively predictable spread pattern
• Unit conversion: 1 Botox unit is the standard reference

A landmark clinical trial published in Dermatologic Surgery demonstrated that Botox produced significant improvement in glabellar lines in 74% of patients at day 30, with effects lasting a median of 3.7 months.

Dysport (AbobotulinumtoxinA)

Manufacturer: Galderma FDA Cosmetic Approval: 2009 (glabellar lines)

Dysport contains a smaller protein complex (approximately 500-900 kilodaltons) than Botox. This smaller molecular size is believed to contribute to its wider diffusion pattern and slightly faster onset.

Key characteristics:

• Onset: 2-3 days (often noticeably faster than Botox)
• Duration: Typically 3-4 months (some studies suggest slightly longer in certain patients)
• Diffusion: Broader spread pattern — advantageous for large areas, requires careful placement near small muscles
• Unit conversion: Approximately 2.5-3 Dysport units = 1 Botox unit

Research in the Journal of the American Academy of Dermatology has shown that Dysport’s faster onset makes it a popular choice for patients who want results before an upcoming event. The broader diffusion can also mean fewer injection points are needed for large areas like the forehead. This quick onset also makes Dysport a favourite among lunchtime procedures.

Xeomin (IncobotulinumtoxinA)

Manufacturer: Merz Aesthetics FDA Cosmetic Approval: 2011 (glabellar lines)

Xeomin is the “naked” neurotoxin — it contains only the 150-kilodalton active botulinum toxin without any complexing proteins. This distinction has theoretical and practical implications.

Key characteristics:

• Onset: 3-5 days (similar to Botox)
• Duration: Typically 3-4 months
• Diffusion: Similar to Botox
• Unit conversion: 1:1 with Botox units
• No refrigeration required before opening (shelf-stable)

Because Xeomin lacks complexing proteins, some researchers hypothesize that it may carry a lower risk of antibody formation over time. A study in Toxicon found that the absence of complexing proteins reduced the immunogenic potential, which could theoretically benefit long-term, frequent users. However, clinically significant antibody resistance remains rare with all three products.

Detailed Comparison Table

When One May Be Preferred Over Another

Choose Botox If…

• You want the most extensively studied neurotoxin with the longest track record
• You value predictability and your provider is most experienced with this product
• You need treatment in areas where precise, limited diffusion is important (e.g., around the eyes, lip flip)
• You’re already happy with your Botox results and see no reason to switch

Choose Dysport If…

• You want faster onset (important if treating before an event)
• You’re treating a large area like the forehead where broader spread can be beneficial
• You’ve noticed diminishing results with Botox and want to try a different formulation
• Your provider recommends it based on your anatomy

Choose Xeomin If…

• You’ve developed or are concerned about developing antibody resistance
• You prefer a “purer” formulation without accessory proteins
• Price is a significant factor (Xeomin is often the most affordable option)
• You’re a frequent neurotoxin user (every 3-4 months) and want to minimize long-term immunogenicity risk

Dosing and Conversion: Why It Matters

One of the most common points of confusion is unit conversion. Botox and Xeomin are considered roughly 1:1 in potency — 20 units of Botox and 20 units of Xeomin should produce similar effects. Dysport, however, is measured differently. The generally accepted conversion ratio is approximately 2.5:1 to 3:1 (Dysport to Botox).

This means a treatment that requires 20 units of Botox would typically require 50-60 units of Dysport. Despite the larger number, the cost per treatment area is usually comparable because Dysport is priced lower per unit.

The FDA explicitly warns that botulinum toxin units are not interchangeable between products. Your provider should be well-versed in the dosing nuances of whichever product they use. Our guide on cosmetic treatment red flags covers how to verify a provider’s credentials before treatment.

New Entrants: Daxxify and Letybo

The neurotoxin market has expanded beyond the original three:

Daxxify (DaxibotulinumtoxinA-lanm)

Manufactured by Revance Therapeutics, Daxxify received FDA approval in 2022 and represents a genuinely novel formulation. Instead of human serum albumin (used as a stabilizer in the other three), Daxxify uses a proprietary peptide. The headline benefit: duration.

Clinical trials published in the Journal of the American Academy of Dermatology demonstrated a median duration of approximately six months — roughly 50% longer than the traditional neurotoxins. For patients tired of quarterly touch-ups, Daxxify offers a compelling proposition, albeit at a higher price point ($500-$800 per treatment area).

Letybo (LetibotulinumtoxinA)

Manufactured by Hugel and recently entering the US market, Letybo is another botulinum toxin type A product that has been widely used in South Korea for years. Early US pricing suggests it may compete on cost while offering similar efficacy and duration to Botox.

Safety and Side Effects

All FDA-approved neurotoxins share a similar safety profile when administered correctly. According to the Mayo Clinic, common side effects include:

• Bruising at injection sites (most common)
• Headache (usually mild and temporary)
• Eyelid drooping (ptosis) — occurs in approximately 1-2% of treatments and resolves as the toxin wears off
• Asymmetry (can often be corrected with a small touch-up)

Serious complications are exceedingly rare when treatment is performed by a qualified provider at appropriate doses. The FDA mandates a boxed warning about the theoretical risk of toxin spread beyond the injection site, though this has not been documented at cosmetic doses in peer-reviewed literature.

How to Get the Best Results

Regardless of which neurotoxin you choose, the following principles maximize your outcome:

1. Choose your provider carefully: Board certification in dermatology, plastic surgery, or facial plastic surgery, combined with extensive injectable experience, matters far more than the product chosen. Neurotoxins are also a key component of non-surgical face lift protocols when combined with fillers and energy devices.

2. Communicate your goals clearly: Do you want a completely frozen look, or do you prefer some natural movement? This affects dosing and placement.

3. Follow aftercare instructions: Avoid rubbing the treated area for 4 hours, stay upright for 2-4 hours post-treatment, and avoid strenuous exercise for 24 hours.

4. Maintain a consistent schedule: Regular treatments (every 3-4 months) often produce better long-term results than sporadic injections. Some research suggests that consistent use can actually train muscles to contract less forcefully over time, potentially extending intervals between treatments.

5. Be open to switching: If one neurotoxin isn’t meeting your expectations, discuss alternatives with your provider. Each formulation interacts slightly differently with individual physiology.

Cost Considerations

Pricing varies significantly by geographic region, provider, and whether the practice participates in loyalty programs. Here’s a general framework:

Loyalty programs can offset 10-20% of annual costs. Allergan’s Alle program and Galderma’s Aspire program both offer meaningful savings for regular users.

The Provider Matters More Than the Product

This is the single most important takeaway: the skill, experience, and aesthetic eye of your injector has a far greater impact on your results than the choice between Botox, Dysport, or Xeomin. A survey by the American Academy of Facial Plastic and Reconstructive Surgery (AAFPRS) found that injector technique accounted for a larger share of patient satisfaction variance than product selection.

All three neurotoxins are safe, effective, and well-studied. The differences between them — while real — are modest compared to the difference between a skilled and an unskilled injector. Prioritize finding a qualified provider who listens to your goals, examines your facial anatomy, and develops a personalized treatment plan.

Frequently Asked Questions

Can I switch between Botox, Dysport, and Xeomin?

Yes, you can switch between products at any time. There is no medical reason to remain loyal to a single brand. Some patients switch to find a product that works better with their individual physiology, while others switch based on pricing or availability. Your provider will adjust the dosing based on the appropriate conversion ratios.

Why does Dysport use more units than Botox?

Dysport units are measured differently than Botox units — they are not equivalent. The generally accepted conversion is approximately 2.5-3 Dysport units for every 1 Botox unit. Despite the higher unit count, the per-treatment cost is typically comparable because Dysport is priced lower per unit.

Can you become immune to Botox?

True immunologic resistance — where the body produces neutralizing antibodies against the botulinum toxin — is possible but rare, occurring in an estimated 1-3% of long-term users. Xeomin’s lack of complexing proteins may theoretically reduce this risk. If you notice your treatments lasting shorter over time, discuss this concern with your provider, who may suggest switching products or adjusting the treatment protocol.

How often should I get neurotoxin treatments?

Most patients return every 3-4 months, as this is the typical duration of effect for Botox, Dysport, and Xeomin. Daxxify may extend this interval to approximately 6 months. Some long-term, consistent users find they can gradually extend intervals as the treated muscles weaken over time. For a detailed look at what to expect after each session, see our recovery timelines guide.

Are neurotoxin injections safe long-term?

Botulinum toxin has been used medically since the 1980s and cosmetically since the early 2000s. Long-term safety data from the FDA and extensive post-market surveillance studies have not identified significant cumulative risks from repeated cosmetic use at standard doses. The most commonly cited long-term concern — antibody resistance — remains clinically uncommon.