These prescription injection medications, Dysport and Botox, are used to treat fine facial wrinkles . They are very similar, with only subtle differences between the 2. Most plastic surgeons would agree that they last about the same time (4 months).
Historically, Botox has been used since the mid 90s to treat cosmetic facial wrinkles. Dysport was recently introduced in the United States (2 years) for similar indications, but it has been used in Europe for nearly 10 years. In my practice, Dysport has a quicker onset of action, but we have not noticed a significant difference in the longevity of the product. Some of my patients have claimed that the Dysport last longer when they compared to their previous Botox injections. This is purely anecdotal and to my knowledge hasn’t been proven in a well designed study.
Hope this helps. Good luck.