How much botox do doctors use?

Depends on patient: When used for cosmetic purposes on the face, it ranges from a few units to 50 or more. I generally use 20-30 for the brows, 5-7 for the forehead, and 7-10 on each side for the crow's feet.

Enough to do the job: The fda "on label" dose of btx for a frown is 20 units. Bottles are labeled "single use" meaning single patient, single time too. A whole 50 or 100 unit vial treats some of the dynamic wrinkles of the frown; crows feet; forehead; brow lift; bunnie nose; gummy smile; walnut chin; depressed lip corners; neck bands or enlarged chewing muscles. There is a bell shaped curve of response & duration.

Botox "dosing": The amount of Botox an injector uses will depend on the area (muscles) being treated. Typically 20-30 units for the areas between the brows, 10-20 units in the forehead, 6-10 units per crows feet, etc. Your doctor can let you know how much you specifically need.

In my practice: The typical dose is 20-30 units per area. I define an area as the glabella (11s between the eyes), the forehead, or the crow's feet on the sides of the eyes (10-15 units/side).