Can Botox Cause Eyebrow Hair Loss?

This is not likely a side effect of the Botox. It is possible that if the Juvederm or any other filler is injected close to or into a near by vascular supply of the eyebrow that it would cause skin or hair loss. Hopefully if this is the reason, it will be temporary. It is critical to choose your injector as potential side effects and undesirable consequences could be significant and prolonged.

I have not heard of Botox causing hair loss, but a possiblity si that the hematoma that you had may have put pressure on the skin and perhaps traumatized the hair follicles. Hopefully  this is temporary.