Swelling of the face with Brazilian Butt Lift is normal and due to positioning during the procedure, face down.
However for accurate diagnosis you need to be examined by your doctor to make sure there are no other problems
Facial swelling after BBL
I agree with Drs. Bruno and Shureih. It is normal due to lying on your belly during the surgery and will resolve in a couple of days. An exam by your doctor is the best way to determine the cause. Best of luck.
Swelling in face after a fat transfer procedure
The facial swelling (edema) is due to the IV fluids and the prone (face down) positioning after surgery. This is common and should resolve in a few days. Consult your plastic surgeon if you continue to be concerned by this issue.