What is the Percentage of Incidences Where Botox is Not Effective at All?

Karmyn,
It typically takes Botox 3 to 7 days to start working, so don't get too worried yet. If your doctor actually used Botox Cosmetic, then you should not have a problem. It would be highly unusual for your doctor to not actually use Botox Cosmetic for your injection. That said, there is a very small percentage (1 out of 10,000) that can form antibodies to Botox, which inactivate the product.
My suggestion is that you wait at least two weeks to see if the Botox works. If it does not, talk to you doctor and have another injection. If it still does not work, have your doctor test you for the antibodies. There are other forms of Botox that you can use (Myobloc) if you actually have the antibodies. Good luck.

You are early in your post treatment course.  Results usually can start to be seen in 4 days.  Usually between day 10 and 14 one can more clearly see the effects.  There is a very small percentage of patients that may form antibodies to the Botox, but it is way too early to determine that.  Please do express your concerns to your injector as they know where they placed the medicine.

Hi Karmyn,
There are a couple possibilities for why the Botox injection has not delivered any results.

It may not be long enough for the results to kick in. Wait 7-10 days and if still no results then schedule a checkup with your injector.
It may be that there is a problem with the Botox. The product may have been too old. Botox does have a usable period after being mixed and it's possible that it was not used quickly enough.
It could be that you are resistant. This scenario is less likely as this happens very rarely (2 patients in thousands for our practice) and usually with those that overuse Botox, getting injections from multiple providers with less than 90 day intervals.

If at 7-10 days you still have no results, go see your injector for an evaluation.