Every injector can recite the conversion ratio: roughly 2.5 to 3 units of Dysport to approximate one unit of Botox. What the textbook number doesn't tell you is how to run both products without confusing your patients, eroding your margin, or letting your injectors drift into two incompatible dosing habits. The ratio is the easy part. The business of running both is where practices either build a coherent two-toxin offering or quietly make a mess.

The ratio is an anchor, not a constant