Hi, and thanks for your question. Adding more saline to a vial of Botox does not increase the amount of Botox in the vial. It only increases the amount of liquid in the vial, and you would actually get LESS Botox for every ml in that vial. Think about putting one teaspoon of sugar in a small cup and filling it half way, or one teaspoon of sugar in a small cup and filling it the whole way. You would still have exactly the same amount of sugar, one teaspoon, but you would just have more water in the cup. Also more water would mean the sugar solution would not taste as sweet, just the same, more saline in the vial would mean the Botox would not be a strong.
