What Botox and Dysport Actually Are
Both Botox and Dysport are botulinum toxin type A. Same active ingredient. Same mechanism. They both block nerve signals to muscles, which relaxes wrinkles caused by repeated facial expressions.
So why do two products exist? Different companies developed different formulations. Think of it like Advil versus Motrin: both are ibuprofen, both work similarly, but they're made differently by different manufacturers.
Botox (OnabotulinumtoxinA)
- •Made by Allergan (now AbbVie)
- •FDA approved 2002 for cosmetic use
- •Most researched neurotoxin globally
- •Approved for 11+ conditions
- •Contains protective proteins
Dysport (AbobotulinumtoxinA)
- •Made by Galderma
- •FDA approved 2009 for cosmetic use
- •Popular in Europe since 1991
- •Smaller molecular structure
- •Known for faster onset
The Key Point
Both products will smooth your wrinkles effectively. Neither is objectively "better." The differences lie in how they behave once injected: how fast they work, how far they spread, and how that affects specific treatment areas.
The Molecular Difference: Why It Matters
Here's where it gets interesting. Botox and Dysport have different molecular structures. This isn't just chemistry trivia. It directly affects how the products behave under your skin.
The Size Difference
What This Means in Practice
Botox Stays More Localized
The larger molecular complex means Botox tends to stay closer to where it's injected. This provides more predictable, targeted results. Great for precision work near the eyes or when treating small areas.
Dysport Diffuses More Broadly
The smaller molecule spreads more from the injection site. This can be beneficial for larger areas like the forehead, where a natural, even result requires broader coverage. But it requires more careful placement near delicate areas.
Onset Speed Varies
The smaller Dysport molecule appears to bind to nerve receptors faster. Many patients see Dysport results in 2-3 days, while Botox typically takes 4-5 days. If you have an event coming up, this timing difference could matter.
Pro Tip
Neither spread pattern is inherently better. It's about matching the product to your treatment area. Experienced injectors often prefer Dysport for foreheads and Botox for crow's feet, but many achieve excellent results with either product in any area.
Unit Conversion: Don't Get Confused by the Numbers
This is where most people get confused. You hear "50 units of Dysport" and think it must be much stronger than "20 units of Botox." Not true. The units are measured differently.
Critical: Units Are NOT Interchangeable
1 unit of Botox ≠ 1 unit of Dysport. They use different measurement systems. Using the same number of Dysport units as Botox would result in significant under-dosing.
General conversion: 1 Botox unit ≈ 2.5-3 Dysport units
Unit Conversion by Treatment Area
| Treatment Area | Botox Units | Dysport Units |
|---|---|---|
| Forehead lines | 10-30 | 25-75 |
| Frown lines (11s) | 20-25 | 50-65 |
| Crow's feet (both sides) | 20-24 | 50-60 |
| Full upper face | 50-75 | 125-190 |
| Bunny lines | 4-8 | 10-20 |
| Lip flip | 4-6 | 10-15 |
| Masseter (jaw) | 25-50 per side | 60-125 per side |
Why Different Units?
Each manufacturer measures potency using their own proprietary testing methods. It's like how shoe sizes vary between brands. A size 10 in Nike isn't exactly a size 10 in Adidas. Your provider knows the conversion and will dose appropriately.
Onset Time: Which Works Faster?
If you've got an event coming up, timing matters. Dysport has a reputation for working faster, and the clinical data supports this. But how much faster, really?
Day 1-2: Dysport
Some patients notice subtle changes. Muscle feels slightly different.
Day 2-3: Dysport
Visible results begin. Movement noticeably reduced. Lines soften.
Day 3-4: Botox
Initial effects appear. Muscle activity starts decreasing.
Day 5-7: Both Products
Significant improvement visible. Results becoming apparent.
Day 10-14: Full Results
Both products reach peak effect. Best time to evaluate results.
Choose Dysport If:
- Event in 5-7 days
- You're impatient (no judgment)
- Want to see changes sooner
Botox Is Fine If:
- Event is 10+ days away
- No urgent timeline
- Regular maintenance patient
The Spread Factor: Precision vs. Coverage
This is arguably the most important practical difference between the two products. How much the neurotoxin spreads from the injection site affects where you can use it and what results you'll get.
Botox: The Sniper
Stays closer to where it's injected. More predictable. Like a sniper rifle: hits exactly where you aim.
Best for:
- • Crow's feet (near eyes, precision needed)
- • Lip flip (small area)
- • Brow lift (targeted shaping)
- • Areas where you don't want spread
Dysport: The Shotgun
Spreads more broadly from injection point. Covers more area. Like a shotgun: wider coverage with each shot.
Best for:
- • Forehead (large, flat area)
- • Frown lines (natural blending)
- • When you want a softer look
- • Fewer injection points preferred
Spread Distance Comparison
Studies suggest Dysport can spread 1-3 cm further than Botox from the injection site. This isn't inherently good or bad. It's just different.
Why This Matters Near the Eyes
When treating crow's feet or the brow area, excess spread can affect the eyelid muscles. This is why some injectors prefer Botox for these areas: less risk of unintended migration. That said, experienced Dysport injectors adjust their technique and placement to compensate.
Cost Comparison: The Real Numbers
Let's talk money. Per unit, Dysport costs less. But you need more units. So what's the actual damage?
Cost per Unit
Total Treatment Cost by Area
| Treatment Area | Botox Cost | Dysport Cost | Winner |
|---|---|---|---|
| Forehead | $100-600 | $100-450 | Dysport |
| Frown Lines (11s) | $200-500 | $200-390 | Dysport |
| Crow's Feet | $200-480 | $200-360 | Dysport |
| Full Upper Face | $500-1,500 | $500-1,140 | Dysport |
The Bottom Line
Dysport typically comes out 10-20% cheaper in total treatment cost. Many clinics price them similarly to stay competitive, but if your clinic charges strictly per-unit, Dysport usually wins on price.
Why Some Clinics Charge the Same
Many clinics charge by "treatment area" rather than per unit, making the cost identical. This simplifies pricing and prevents patient confusion over unit differences.
Best Areas for Each Product
While both products work everywhere, certain areas may benefit from one product's properties more than the other. Here's where each tends to shine.
DAreas Where Dysport May Excel
Forehead Lines
The broader spread creates natural-looking results across this large, flat area. Fewer injections may be needed for even coverage.
Frown Lines (11s)
Faster onset is nice here since frown lines are often a priority concern. The spread helps blend the treatment naturally.
Large Muscle Areas
Masseter, trapezius, and other large muscles benefit from Dysport's diffusion for more even coverage.
"Soft" Results
When you want a natural look with some movement preserved, Dysport's spread can create a softer effect.
BAreas Where Botox May Excel
Crow's Feet
Precision matters near the eyes. Botox's localized effect reduces risk of spreading to nearby eyelid muscles.
Lip Flip
This small, precise treatment benefits from Botox staying exactly where placed. No room for wandering here.
Brow Lift/Shaping
Targeted brow sculpting requires precision. You want to lift specific points without affecting nearby muscles.
Under Eyes
Delicate area requiring extreme precision. Less spread means more control over results.
Important Caveat
These are generalizations, not rules. An experienced injector can achieve excellent results with either product in any area by adjusting technique, dosing, and placement. Many top injectors use both products interchangeably based on availability, patient preference, or clinic inventory.
Switching Between Botox and Dysport
Curious about trying the other product? Good news: switching is safe and straightforward. Many people try both to see which they prefer.
Yes, You Can Switch
- 1Wait until your current treatment wears off (3-4 months) before switching
- 2Tell your provider which product you last used and when
- 3Expect similar results but pay attention to differences in feel and duration
- 4Give it at least 2 treatments before judging. One session may not be representative
Reasons People Switch
Botox → Dysport
- • Want faster results
- • Seeking a softer, more natural look
- • Cost savings at their clinic
- • Botox seems to wear off quickly for them
- • Curious to compare
Dysport → Botox
- • Want more precise, targeted results
- • Experienced unwanted spread with Dysport
- • Their clinic only carries Botox
- • Prefer the "gold standard" reputation
- • Curious to compare
Can You Mix Them?
Some injectors use different products for different areas in the same session. For example, Dysport for the forehead and Botox near the eyes. This is safe but less common. Most providers prefer sticking with one product per session for simpler dosing calculations and follow-up.
What the Clinical Studies Say
Both products have extensive research behind them. Here's what the science actually shows, stripped of marketing spin.
1Efficacy: Both Work Equally Well
Head-to-head studies consistently show equivalent efficacy. A 2019 meta-analysis of 14 randomized controlled trials found no significant difference in wrinkle improvement between the two products.
"Both onabotulinumtoxinA (Botox) and abobotulinumtoxinA (Dysport) demonstrated similar efficacy in reducing glabellar lines at 30 and 120 days post-treatment."
2Onset: Dysport Is Faster
Multiple studies confirm Dysport's faster onset. A 2012 study showed Dysport produced visible results 1-2 days earlier than Botox on average. The difference was statistically significant.
3Duration: Roughly Equal
Duration studies show mixed results. Some suggest Dysport wears off slightly faster; others find no difference. The consensus: both last 3-4 months for most patients, with individual variation mattering more.
Patient satisfaction at 4 months post-treatment: Botox 78% | Dysport 75% (not statistically different)
4Spread/Diffusion: Dysport Wins (Or Loses, Depending on Perspective)
Lab studies confirm Dysport's greater diffusion. A 2008 animal study showed Dysport spread significantly further from the injection site. Whether this is advantageous depends entirely on the treatment area and desired outcome.
5Safety: Equivalent Profiles
Both products have excellent safety records. Adverse event rates are similar: temporary bruising, headache, and injection site reactions. Serious complications are rare with both products when administered by qualified injectors.
Side Effects: Botox vs Dysport
Good news here: side effect profiles are nearly identical. Neither product has a clear safety advantage.
| Side Effect | Botox | Dysport |
|---|---|---|
| Injection site bruising | 10-25% | 10-25% |
| Headache | 11% | 11% |
| Injection site swelling | 5-10% | 5-10% |
| Eyelid drooping (ptosis) | 1-5% | 2-5% |
| Brow heaviness | 1-3% | 1-4% |
| Asymmetry | 2-4% | 2-4% |
Dysport's Slightly Higher Diffusion-Related Risks
Because Dysport spreads more, there's a marginally higher risk of unintended effects in adjacent muscles if placement isn't precise. This is why some studies show slightly higher rates of eyelid drooping with Dysport (though still rare). Experienced injectors compensate for this with adjusted technique.
The Skill Factor
Your injector's skill matters far more than which product you choose. An experienced provider using either product will have better outcomes than an inexperienced provider using either product. Side effects are largely technique-dependent, not product-dependent.
What Providers Actually Think
Injectors have opinions. Strong ones, sometimes. Here's what they say when you ask them off the record.
The Botox Loyalists Say:
"I know exactly what I'm getting with Botox. It's predictable, precise, and I've been using it for years. Why fix what isn't broken? My patients are happy with their results."
These providers often value Botox's longer track record and localized effect, especially for delicate areas around the eyes.
The Dysport Fans Say:
"Dysport gives a softer, more natural look. Patients love how quickly it kicks in. For foreheads especially, I think it's superior. The spread is a feature, not a bug."
These providers appreciate Dysport's rapid onset and natural diffusion pattern, particularly for larger treatment areas.
The Pragmatists Say:
"I use both depending on the patient and the area. Dysport for foreheads, Botox around the eyes. Sometimes I let patients try both and see which they prefer. The differences are real but subtle."
Many experienced injectors are product-agnostic, choosing based on specific patient needs rather than brand loyalty.
Why Some Clinics Only Carry One
It's often about logistics, not preference. Carrying two products means two inventories, two sets of pricing, and potential confusion. Many clinics standardize on one product for simplicity. This doesn't mean the other is inferior. If your preferred clinic only offers one, you'll likely be happy with results from either.
Making Your Decision: A Simple Framework
Still unsure? Let's make this simple. Answer these questions:
Consider Dysport If:
Consider Botox If:
The Honest Truth
If you're agonizing over this decision, stop. Both products will smooth your wrinkles effectively. The differences are real but subtle. Your injector's skill and technique matter far more than which bottle they pull from the shelf.
Pick one based on the factors that matter most to you. If you don't love it, try the other one next time. There's no wrong answer here.
Frequently Asked Questions
Is Dysport stronger than Botox?
No, Dysport isn't stronger. It uses more units because the units are measured differently. One unit of Botox equals roughly 2.5-3 units of Dysport. The actual muscle-relaxing effect is comparable when dosed correctly.
Why does Dysport use more units than Botox?
Dysport units are simply smaller. Think of it like currency exchange: you need more Japanese yen to equal one US dollar, but they buy the same amount. Dysport's 50 units roughly equals Botox's 20 units in effect.
Which lasts longer, Botox or Dysport?
Both last about the same: 3-4 months for most people. Some studies suggest Dysport may wear off slightly faster in certain patients, while others report no difference. Individual metabolism matters more than the product.
Can I switch from Botox to Dysport?
Yes, you can switch between them safely. Many people try both to see which they prefer. Just wait until your current treatment wears off (3-4 months) before switching. Your provider will adjust the dosing accordingly.
Is Dysport cheaper than Botox?
Per unit, yes. Dysport costs about $4-6 per unit versus Botox's $10-20 per unit. But since you need 2.5-3x more Dysport units, the total treatment cost ends up similar. Some clinics price Dysport slightly lower as a competitive advantage.
Does Dysport spread more than Botox?
Yes, Dysport has a smaller protein complex and tends to diffuse more. This can be an advantage for larger areas like the forehead (fewer injection points needed) but a disadvantage near delicate areas like the eyes where precision matters.
Which is better for forehead lines?
Both work well for forehead lines. Dysport's broader spread can be advantageous here, potentially giving more natural-looking results with fewer injections. However, an experienced injector can achieve excellent results with either product.
Why might someone prefer Dysport over Botox?
Some people choose Dysport because it kicks in faster (2-3 days vs 4-5 days), spreads more naturally for a softer look, or simply because they've tried both and prefer how Dysport feels. Cost savings at certain clinics can also be a factor.
Can you mix Botox and Dysport in the same session?
Technically yes, and some injectors do use different products for different areas. However, most providers prefer to stick with one product per session to better predict results and simplify any touch-up calculations.
Which has fewer side effects?
Side effect profiles are nearly identical. Both can cause temporary bruising, headache, and drooping if improperly placed. Neither has a clear safety advantage. The skill of your injector matters far more than which product you choose.