Dysport and Botox contain the same active ingredient, so the choice between them comes down to how each one behaves once it is in the muscle. Here is what actually differs.
Most people arrive at a consultation having already heard of Botox and never heard of Dysport. Then the injector suggests Dysport, and the obvious question follows: why that one?
Both products are botulinum toxin type A. Both work the same way, by temporarily relaxing the muscle that creases the skin above it. The differences between them are real but narrow, and they matter more for some areas of the face than others.
What Dysport does differently
Dysport spreads further from the injection point than Botox does. That is the single most useful thing to know about it.
Wide spread is an advantage across a broad, flat muscle. The forehead is the clearest example: fewer injection points can cover the whole area, and the result tends to look even rather than patchy. The same property is a liability near the eyebrow or the eye, where a few millimetres of unwanted diffusion can drop a brow or affect the lid.
Dysport also tends to take effect a little sooner. Most patients notice movement changing within 2 to 3 days, against 3 to 7 for Botox. Both settle fully at around 14 days, and both last roughly 3 to 4 months before the muscle returns to normal.
One practical note: the units are not interchangeable. Dysport is dosed differently, at roughly 3 units of Dysport for every 1 unit of Botox. If you are comparing quotes between clinics, comparing unit counts tells you nothing useful unless you know which product each price refers to.
What Botox is approved for
Botox Cosmetic carries FDA approval for 3 areas: the vertical frown lines between the brows, the horizontal forehead lines, and the crow’s feet at the outer corners of the eyes. Dysport is approved for the frown lines only.
That matters less in practice than it sounds. Off-label use of both products is routine and well documented in aesthetic medicine. But it is worth knowing, because it explains why a clinic treating several areas in one visit will often reach for Botox by default.
What neither one treats
Neurotoxin softens the lines your face makes when it moves. It does not fill anything.
The folds running from the nose to the corners of the mouth are caused by volume loss and gravity, not muscle activity, so no amount of Dysport or Botox will smooth them. Those need filler. The same is true of hollowing under the eyes and thinning in the cheeks. A consultation that recommends neurotoxin for a fold caused by lost volume is worth questioning.
How the choice usually gets made
If the concern is the forehead, Dysport is often the better fit, because its spread suits the muscle.
If the concern sits near the eyes, or covers several areas at once, Botox gives the injector more control over exactly where the product lands.
If you have had one before and liked the result, stay with it. Response varies between individuals in ways that are difficult to predict in advance, and a product that has already worked well on your face is better information than any general comparison.
Price is worth checking, but not comparing directly. Dysport is frequently priced lower per unit and requires more units, so the cost of treating the same area often lands within a similar range.
What to ask at the consultation
Bring the question in terms of the area, not the brand. An injector who treats faces daily will have a view on which product suits your forehead or your brow, and that view is worth more than a comparison article.
Worth asking directly: how many units, of which product, and what the total comes to. Whether they expect you back for a 14-day check. And what they would do differently if the result comes in softer or stronger than you wanted.
At Bella Vida Aesthetics in Downtown Miami, Iani Silveira works with both products and will explain which one she is recommending for your face and why. You can book a consultation to talk it through.