Botox and Dysport are the two most popular wrinkle-relaxing injectables in the US, and both are made from botulinum toxin type A, so they work by the same
Botox and Dysport are the two most popular wrinkle-relaxing injectables in the US, and both are made from botulinum toxin type A, so they work by the same mechanism and deliver similar smoothing. The real differences are practical: how fast each kicks in, how far it spreads, how it’s dosed, and which areas it suits best. Here’s a side-by-side look, then how to choose.
Botox and Dysport are the two most popular wrinkle-relaxing injectables in the US, and both are made from botulinum toxin type A, so they work by the same mechanism and deliver similar smoothing. The real differences are practical: how fast each kicks in, how far it spreads, how it’s dosed, and which areas it suits best. Here’s a side-by-side look, then how to choose.
Both are botulinum toxin type A neuromodulators that temporarily block the nerve signal telling a muscle to contract, relaxing it so the overlying skin smooths out. Both are prescription injectables, both wear off in about three to four months, and both share the same class-wide safety profile — including the FDA boxed warning about rare spread of toxin effects. For most patients treating the same area, a skilled injector can achieve very similar end results with either.
Botox is onabotulinumtoxinA, made by AbbVie’s Allergan Aesthetics. Dysport is abobotulinumtoxinA, manufactured by Ipsen and distributed in aesthetics by Galderma. The key formulation difference: Dysport has a smaller protein complex, which is why it diffuses more broadly from the injection point — the single fact that drives most of the practical differences below.
Botox Cosmetic is FDA-approved for four facial areas — frown lines, crow’s feet, forehead lines, and neck (platysma) bands. Dysport is FDA-approved for moderate-to-severe frown lines (glabellar lines) in adults under 65, and is widely used off-label for the forehead, crow’s feet, and other areas. Both also have separate therapeutic approvals.
Dysport usually shows results a little sooner — often within 2–3 days, versus 3–5 days for Botox — though both reach full effect around two weeks and last roughly three to four months. Duration varies more by individual (metabolism, dose, muscle strength) than by brand. If you’re treating before an event, the faster onset can matter; either way, schedule two to four weeks ahead. See how long results last.
This is the most useful difference to understand. Because Dysport spreads more, it can cover a large, flat area like the forehead smoothly and with fewer injection points — which is why many injectors favor it there. That same spread is a drawback near delicate spots like the eyes, where unintended diffusion can affect nearby muscles. Botox stays more localized, giving precise control for small areas such as the glabella (frown lines) or crow’s feet. For forehead wrinkles specifically, that broader spread is often an advantage.
You can’t compare “20 units of Botox” to “20 units of Dysport” — the FDA label states the units are not interchangeable. In practice, injectors use a conversion of about 2.5:1 to 3:1 (Dysport to Botox), so roughly 20 Botox units in the frown lines corresponds to about 50–60 Dysport units. The higher number doesn’t mean “more” product or a stronger treatment — the two are simply measured on different scales, like miles versus kilometers.
Because Dysport uses more units, its per-unit price is lower — but since you need more units, the total cost per area is usually comparable to Botox. Always ask for the price of treating your specific area, not the per-unit rate, and confirm which product is being used. See typical pricing in the Botox cost guide.
Neither is universally “better.” Match the product to the goal:
Lean Dysport for: large areas like the forehead, or when you want results a day or two sooner.
Lean Botox for: small, precise areas, more aesthetic indications, and the longest track record and protocols.
Either works for first-timers. If you’ve built tolerance to one, switching to the other sometimes helps.
The most important variable isn’t the brand — it’s the injector. Learn more on the Botox and Dysport pages, then find a qualified provider near you who offers both and can recommend the right fit.
Botox and Dysport aren’t the only options. Xeomin (incobotulinumtoxinA) is a “naked” toxin with no added complexing proteins, which some believe lowers the chance of resistance over time; Jeuveau (prabotulinumtoxinA) is a cosmetic-only, often value-priced alternative; and Daxxify (daxibotulinumtoxinA) is marketed for longer duration. If you’re weighing the full field, see Botox vs Xeomin next.
As products in the same class, Botox and Dysport share a similar safety profile. Most side effects are mild and temporary — pinpoint bruising, redness, or a brief headache — and a temporary eyelid or brow droop can occur if the product reaches a nearby muscle (a risk that’s slightly more relevant with Dysport’s broader spread near the eyes). Both carry the same FDA boxed warning about rare spread of toxin effects. See the full Botox side effects guide for details that apply to both.