Same idea, small differences
Botox is onabotulinumtoxinA, Dysport is abobotulinumtoxinA, and both are purified botulinum toxin type A. Each one relaxes the muscle that folds your skin into a line every time you squint or frown, and both hold FDA approval for the frown lines between the brows. Most people who have done well on one do well on the other.
Where they part ways is in the detail. One starts sooner. One stays nearer the point of entry. What decides between them on a given face is the muscle itself: how broad the area is, and whether it sits braced at rest or only pulls when you ask it to.
How they compare
Botox and Dysport are the pair most people are choosing between. Daxxify belongs to the same family and sits in the table for reference. Onset and spread separate them, and the muscle decides which one is used.
| Botox | Dysport | Daxxify | |
|---|---|---|---|
| Onset | Within a week | A few days | Days, up to a week |
| Spread from injection | More localized | Diffuses a little more | Localized |
| Best suited to | Precise, small areas | Larger areas (e.g. forehead) | Longer intervals |
| Unit dosing | Its own units | A separate scale of units | Close to Botox units |
| US cosmetic approvals | Frown, crow's feet, forehead | Frown lines | Frown lines |
| Typical duration | Months at a time | Much like Botox | Often holds longest |
| Common side effects | Mild, temporary | Mild, temporary | Mild, temporary |
A Dysport unit is not a Botox unit. It takes two to three Dysport units to do the work of one Botox unit, so a higher count does not mean more product went in. Neuromodulators are $15.50 a unit, and Beauty Bank members pay less (see the Beauty Bank page). Your count is confirmed at your complimentary consultation, and there is no deposit. Frown lines are the approval they share; the rest is off-label, and that is stated up front.
What to expect after either one
They act on muscle the same way, so the day or two afterward feels much the same with either one. There may be a pinpoint of redness where the needle went in, and some mild swelling that passes quickly. A light headache happens now and then.
Occasionally product reaches a neighboring muscle and a brow feels heavy for a few weeks. It eases as the effect wears down, and a conservative dose placed with care makes that unlikely to begin with. Serious reactions are uncommon. Pregnancy and nursing are reasons to wait, as is a neuromuscular condition, and your full health history comes first for that reason.
The injector matters more than the brand
Neither product makes a result look natural on its own. Placement and dose do that. The brand is a small decision sitting inside a larger one about how much movement to leave you.
Catherine has nearly 20 years injecting, and she taught injectable technique to physicians, dentists and nurse practitioners for the Allergan Medical Institute. She examines how the area moves and how much tension it holds at rest, then doses conservatively so your expression stays yours.
Not sure which you need?
You do not have to decide Dysport vs Botox on your own. At your complimentary consultation in Bronxville or Bridgehampton, Catherine examines your facial movement and recommends the product and dose that suit the area. There is no deposit.
By Catherine Curtin, MSN, FNP-C
November 6, 2025
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