Why Didn't Botox Work on my 11's?

Botox dosing requires a certain degree of titration from patient to patient to match the physical changes and expectations present.  I inform patients that my goal is to achieve a relaxed look at rest, which still allows for some motion. If a patient desires "no motion" in the glabella, a higher dose of Botox is administered.  However, in some patients, these hyper dynamic lines are so deeply etched that Botox alone is insufficient.  Various Fillers can potentially be used in the glabella, but are not FDA approved for this purpose, and have been associated with specific complications.

Hi VE.  There are a couple of possibilities, but assuming your injector is capable and there is a suitable does of Botox injected, it could be that the lines are too deep for Botox alone.

In some instances, using Botox alone will not completely resolve the frown lines you noted as the "11's".  In these cases both Botox (or Dysport) and a dermal filler like Restylane or Juvederm is required.  When the vertical lines are too deep, the Botox is often not enough and the area needs to be plumped or filled with these other products.  You may want to ask your injector about this, but it shoal have been discussed beforehand if this was a possible outcome.