Can a facial injury after Botox cause facial droop?

I dont feel that you will have a problem with your botox injections, however you will have to wait 2 weeks in order to see if there was any changes. 

Most of the Botox is bound to its receptor in the body by 4 hours. I doubt your botox will move due to an injury occurring 11 hours later. However, if your injury is causing facial paralysis then you need to be seen by a doctor right away.Good luck, Dr. ALDO 

I think it would be very unlikely that an injury to the face 11 hours after your Botox treatment would lead to any eyebrow or facial droop.  It normally would take a week or so to see any drooping as a result of a Botox treatment.  

I think it is unlikely that your fall will affect your Botox and cause any kind of droop but only time will tell.  For now, be patient and kind to yourself as your body heals. It takes about 2 weeks for your Botox results so you should know if there's been any damage by then. Best of luck. 

This is unlikely. It is too early to say what your response will be to the Botox. Final results are usually apparent at 2 weeks. Facial "drooping" would result from paralysis of one of the branches of the facial motor nerves. Bruising does not generally cause nerve paralysis. Good luck to you!

It is unlikely that a facial injury 11 hours after Botox injections would lead to drooping of your eyebrow or face. Of course, you will find out the answer in about 2 to 3 weeks.Steven Turkeltaub, MD

Anything that causes the Botox to spread from its intended placement can lead to relaxation of the wrong muscle. However, I suspect you will be alright since it had already been 11 hours since the treatment. Unfortunately, time will tell. Give the Botox up to 14 days to see the full results. 

It is unlikely that your Botox will be affected by injury you have sustained, but always report these events to your practitioner.  The full results of your Botox treatment will take approximately 10 to 14 days to settle and you will be able to make an assessment then.