It is important to understand that individual responses to Botox often vary from patient to patient. Some patients simply need a lower number of units than others to achieve proper results. There are some common factors that determine the number of units needed for a patient to achieve their desired results. One factor is the length of time since a patient was last treated with Botox. For example, if a patient had a full response to a Botox treatment less than 2 months ago, the dosage required to achieve results may be less than a patient treated a year ago.

A second common factor is the area being treated; some areas simply require more units on average than other areas. An example of this is underarm sweating, a condition commonly treated with Botox. It is not uncommon to use more units of Botox for this condition than when treating movement lines between the brows.

Another factor is that some patients may want more or less of a specific response than others, requiring different amounts of Botox.

The key to botox dosing is tailoring to the individual area , patients needs and patients wants .