Botox, Dysport and Xeomin are all reconstituted with sterile saline. The amount of saline used for each is up to the personal preference of the injector and this difference in volume does not affect the ultimate result of treatment. Of the three types, one is not necessarily better than the others although individual doctors may have a preference for one in particular.
I use about 650 vials of Botox a year. My best personal success is using preserved saline and mixing 2.5 ml with a 100 unit Botox vial. This provides five syringes of 20 units each which is my most common treatment dose for upper face.For Dysport I mix 3 ml of preserved saline in a 300 unit vial. This gives five 60 unit syringes. Remember 3 to 1 gets it done! I basically use 3 Dysport units per each Botox unit. So for 20 units of Botox, I would inject 60 units of Dysport.For Xeomin, I dilute and inject the same as Botox.Hope this Helps,Joe Niamtu, III DMD Cosmetic Facial SurgeryRichmond, Virginia