The worry behind this question is reasonable. Dysport is often described as spreading farther, and a spreading toxin sounds like a drooping eyelid. A careful reader in Folsom should separate what the source says about spread from what it says about drooping.
What Cleveland Clinic says about spread
Cleveland Clinic writes: "Dysport is often described as having a wider spread than Botox, meaning it may extend out farther from the injection point. This can be helpful when treating larger areas, like on the forehead. But that doesn’t mean the more limited spread of Botox should be viewed as a negative. In fact, that smaller range can be useful in treating more targeted areas, like around the eyes."
Wider spread is presented as a trade-off between products, with a use for each, and not as a defect in Dysport.
What Cleveland Clinic says about drooping
On the side effect itself, Cleveland Clinic writes that if Botox or Dysport is injected into neighboring muscles from the intended target area, it can temporarily cause drooping of the eyelid, drooping of the eyebrow or an abnormal eyebrow shape.
The sentence names both products. Drooping follows from product reaching neighboring muscles, whichever product is used, and Cleveland Clinic describes it as temporary.
The practical reading
Spread and placement both matter. Cleveland Clinic points to the narrower range of Botox for targeted areas like those around the eyes, and it ties drooping to injection into neighboring muscles. Whether either product is riskier in a particular face is a question for the injector who will place it.
Ask which areas they plan to treat, which product suits each area and why, and how they handle the possibility of a droop. Their answers tell you more than a general claim about either brand.
Cleveland Clinic pages to open next
Cleveland Clinic has pages on Botox Cosmetic uses and side effects and on cosmetic injectables treatment.
Ask about drooping before the injection, not after.