Neither Xeomin nor Dysport is universally better. They’re both botulinum toxin type A products that relax muscles to smooth wrinkles, but they differ in formulation, spread, onset speed, and ideal use cases. The “better” choice depends on what you’re treating, how your body responds, and what matters most to you.
How the Formulations Differ
The biggest difference is what surrounds the active ingredient. Xeomin is sometimes called the “naked injectable” because it contains only the purified neurotoxin with no accessory proteins attached. Dysport, by contrast, includes additional complexing proteins around the toxin molecule. This distinction sounds minor, but it affects how each product behaves once injected, how your body might react to it over time, and even how clinics store it.
The units aren’t interchangeable either. Dysport is measured in smaller units of potency, so you’ll need roughly 3.5 to 4 Dysport units to match 1 Xeomin unit. A clinical audit published in Neurology found the effective conversion ratio was about 3.64:1 (Dysport to Xeomin). This means the number on your receipt will look very different, but the cost and effect can be comparable.
Onset and How Long Results Last
If speed matters to you, Dysport has the edge. Results often appear within 24 to 48 hours, making it a popular pick before events or vacations. Xeomin takes longer to kick in, typically 3 to 7 days, with full effects settling in around 2 weeks.
Both products generally last 3 to 4 months, though individual results vary based on your metabolism, the treatment area, and how many units were used. Some people find one lasts slightly longer than the other for them personally, which is why many injectors suggest trying both over separate appointments to compare.
Spread and Precision
This is where the two products diverge most in practice. Dysport spreads slightly more from each injection point, which means it can cover a larger zone with fewer needle sticks. That makes it well suited for broad, flat areas like the forehead, where you want an even, natural-looking relaxation across a wide muscle. Injectors also sometimes prefer Dysport for jaw slimming or TMJ relief because the masseter muscles are large and benefit from that wider diffusion.
Xeomin stays more concentrated where it’s placed. That tighter radius gives injectors finer control, which is valuable for small, targeted treatments. A lip flip, for example, requires tiny, precise doses right along the lip border. Crow’s feet and the area between the brows can also benefit from Xeomin’s focused effect, particularly if you want to relax specific lines without affecting nearby muscles that control natural expression.
Neither spread pattern is inherently better. It’s about matching the product to the job.
Antibody Resistance Over Time
Your immune system can potentially develop antibodies against botulinum toxin, which would make treatments less effective over time. This is called secondary non-response, and it’s one area where Xeomin’s “naked” formulation may offer an advantage. The theory is straightforward: a higher protein load gives your immune system more targets to react against. Because Xeomin strips away the accessory proteins, it presents fewer potential triggers.
In clinical trials involving 2,650 patients treated with Xeomin, none developed clinical resistance due to neutralizing antibodies. Among the small number of patients (13 total) who did develop detectable antibodies, all had previously been treated with Botox or Dysport, and none lost clinical benefit. No head-to-head studies have directly compared antibody formation rates between products, so the real-world difference remains uncertain. Still, if you’ve been getting neuromodulator injections for years and notice they’re wearing off faster or working less effectively, switching to Xeomin is a reasonable strategy your injector might suggest.
Who Should Avoid Dysport
One concrete safety difference: Dysport may contain trace amounts of cow’s milk protein. If you have a known allergy to cow’s milk protein (not just lactose intolerance, but an actual protein allergy), Dysport is contraindicated. Xeomin does not carry this restriction, making it the safer option for anyone with that allergy.
Choosing Based on Treatment Area
Your injector’s recommendation will likely come down to what you’re treating and what outcome you want. Here’s how the two products tend to line up in practice:
- Forehead lines: Dysport’s broader spread covers this large, flat area efficiently, often with fewer injection points.
- Frown lines (between the brows): Both work well here. Xeomin’s precision can be helpful for people who want a subtle result that preserves some natural movement.
- Crow’s feet: Either product can be effective. Xeomin’s tighter radius reduces the risk of affecting nearby muscles around the eye.
- Lip flip: Xeomin is often preferred because the treatment demands exact placement of very small doses.
- Jaw slimming or TMJ relief: Dysport’s ability to diffuse across the large masseter muscle makes it a common choice.
- Long-term maintenance (years of regular treatments): Xeomin’s lower protein load may reduce the chance of developing resistance over time.
Cost and Practical Considerations
Per-unit pricing for Dysport is typically lower than Xeomin, but remember the conversion ratio: you need roughly 3.5 to 4 times as many Dysport units. When you account for that, the total cost per treatment session is often similar, though it varies by clinic and region. Some providers run promotions or loyalty programs for one brand over the other, so it’s worth asking about both.
Xeomin can be stored at room temperature before it’s mixed, which doesn’t affect you directly but can mean smaller clinics or mobile injectors are more likely to keep it in stock. Dysport requires refrigeration from the start. After either product is reconstituted (mixed with saline for injection), both need refrigeration and are typically used within a few weeks.
Why Many People Try Both
Individual biology plays a surprisingly large role. Some people find Dysport kicks in faster and feels smoother on their forehead. Others prefer the way Xeomin looks around their eyes or notice it lasts a bit longer for them. Injector technique matters enormously too, because the same product in different hands can produce very different results. If your first experience with one product wasn’t perfect, it’s worth trying the other before concluding that neuromodulators aren’t for you. Many experienced injectors select the product based on the specific area they’re treating during each visit, sometimes even using both in the same session for different zones of the face.