Dysport vs Botox -- faster and last a little longer
Botox and Dysport both work very well in most patients. In our clinic, we do see patients have quicker onset of effects with Dysport (1-3 days) vs Botox (3-7 days). So for patients who want to look great for the party in 2-3 days, Dysport may be a better bet. Also, in some patients, Dysport seems to last longer but the difference is not obvious for everyone.
In general, Botox and Dysport both work very similarly and if a patient have built up resistance to Botox, it is possible but...