Question: how many ml in 20 units of botox?
Answer: 20 Units per 0.5 mL. Approved dose for lateral canthal line treatment is 4 Units per 0.1 mL at each of the 6 injection sites (3 on each side), for a total dose of 24 Units per 0.6 mL. BOTOX® Cosmetic dosage is dependent on the area(s) being treated.