Distribution of Botox Units in the Glabellar Area

As you can see from the previous posts, you have to individualize both the total dose as well as how it is distributed. All of the clinical trials use 5 standard injection points, one in the midline to get the procerus. However, not everyone has a hyperactive procerus muscle; it causes a horizontal line across the nose between the eyes, while the corrugator muscles cause the more vertically oriented lines between the brows. So the product should be placed where the muscles are the most active, not with the same pattern in everyone.

I generally start from 20 units and adjust from there.  In most women, 20 units tends to more pretty well.  Whereas men generally need a bit more that 20 units to get the desired affect.
Hope that helps.

Most of my female patients need a minimum of 25 units of Botox (50 or more units of Dysport) to obtain a good and acceptable duration of effect. Depending on how much of the corrugator muscle is recruited from the mid forehead, I may use 35 units of Botox (or even more, rarely, in this area). The face is examined at a resting phase and with dynamic expression to gauge the girth of the muscle and determine the number of units of botunlinum toxin needed. 5 or 7 insertion sites might be used for the glabella.