Walk into any consultation in Miami this year and you will be asked, 'Do you want Botox, Dysport, or Daxxify?' as if all three are flavors of the same thing. They are not. They are three FDA-approved formulations of botulinum toxin type A, and the differences between them — onset, duration, diffusion, formulation — drive how we select between them.
What's the same
All three are botulinum toxin type A. The active molecule is the same. They all work by blocking the neuromuscular junction at acetylcholine release, temporarily relaxing the targeted muscle. They are all reversible — meaning the muscle eventually starts working again on its own — and they are all dose-dependent, so the question is never 'which one' in a vacuum but 'which one and how much, where, and in whom.'
What's different
Botox uses a 900 kDa accessory protein complex around the active molecule. Dysport uses a smaller complex (~500 kDa) and tends to diffuse slightly more — useful for broad muscles like the forehead, cautious to use in the glabella. Daxxify is the newest, formulated with a peptide stabilizer instead of an accessory protein; in trials it lasted approximately 6 months versus 3–4 for the others. Xeomin (which we also stock) is 'naked' — no accessory proteins at all — making it useful for patients who develop neutralizing antibodies to Botox over many years.
The most common myth is that Daxxify 'always' lasts six months. In practice, real-world duration is dose- and patient-dependent — most of our patients see five months on Daxxify, four on Botox/Dysport, three on Xeomin.
How we choose
- Forehead patients with strong frontalis muscles: Dysport, often.
- Glabella-only ('11s') patients with deep static lines: Botox or Daxxify, depending on duration goals.
- Patients chasing budget at frequent intervals: Botox or Dysport — same per-area cost, every 3–4 months.
- Patients who want fewer appointments: Daxxify, accepting the higher per-unit cost.
- Patients who've developed Botox 'tolerance': Xeomin.
We don't view any of these as 'better' or 'worse.' We view them as four tools, and the one we pick is the one that suits your face, your schedule, and your budget. Most importantly: a careless practitioner can make any of the four look bad, and a careful one can make any of the four look invisible. The molecule is far less important than the hand holding the syringe.