Botox vs. Dysport: Which One Actually Lasts Longer?

Quick answer

Botox and Dysport last about the same — roughly 3 to 4 months for most patients. Dysport tends to work faster (visible in 1–2 days vs. 4–7) and spreads a bit more, which can suit larger areas like the forehead. How long your result lasts depends more on dose and injector skill than on the brand.

Medically reviewed & written by Channing Barnett, MD — board-certified dermatologist (Princeton · Albert Einstein College of Medicine · Columbia), Boca Raton & Delray Beach. Full profile →

The short answer

For most patients, both last about 3–4 months. Neither brand has a clear longevity advantage; individual factors matter more.

Where they actually differ

Dysport tends to take effect faster and diffuses a bit more (useful for broad areas like the forehead); Botox is slightly more precise for small, targeted muscles. Their dosing units are not interchangeable.

Which suits which area

A skilled injector may choose Dysport's spread for the forehead and Botox's precision for frown lines or crow's feet — tailored to your muscles, not a menu.

Why 'which lasts longer' is the wrong question

Dose, muscle strength, and technique drive how long your result lasts far more than the brand. The real variable is who injects you.

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Book a consultation with Dr. Barnett — call (561) 717-2277.

Frequently asked questions

Does Botox or Dysport last longer?

They're about the same - roughly 3 to 4 months for most patients. Individual factors (dose, metabolism, muscle strength, injector technique) matter more than the brand.

What's the main difference between Botox and Dysport?

Dysport tends to take effect faster and spread a bit more (useful for larger areas like the forehead); Botox is slightly more precise for small, targeted muscles.

Are Botox and Dysport units the same?

No - the dosing units are not interchangeable (Dysport uses more units per area). This is one reason injector experience matters.

Which is better for the forehead vs. frown lines?

Dysport's spread can suit broad areas like the forehead; Botox's precision can suit the glabella and crow's feet - but a skilled injector tailors either to you.

Which should I choose?

The better question is who injects you. An experienced board-certified dermatologist selects product and dose per muscle for a natural, lasting result.