Why is my hair falling out after a facelift?

Telogen Effluvium is a condition (type of hair loss) that can sometimes happen after stress/ shock, or a traumatic event like surgery. I have only seen this happen when a heavier anesthesia is used. I have not seen this with the local anesthesia that I use with my Advanced Lifts.
The good news is that this is usually a temporary event and the hair should grow back. Laser Cap treatments will expedite the regrowth process by nourishing the follicles with more blood. 
I would advise talking with your MD and let them examine and try and determine what is happening etc....
 

Unless the hair dye caused the problem it is most likely caused by stress or anesthesia, but it is usually only temporary. Follow your surgeons post operative instructions. Good luck.

Thank you for your question.  The Anesthesia could be a trigger or stress / shock due to the trauma can cause hair loss, this is only temporary.  All The Best

Hair loss can result from anesthesia or stress. I personally do not cut the hair because, if any loss ensues, this will make it even more obvious.

Anesthesia and stress can cause hair loss.  This is usually temporary.  I would use good hair products that promote growth, as well a Rogaine.