Is fat transfer a good option to get a more symmetrical face?

Autologous fat transfer is one approach to correct your
asymmetry. It must be explained to you pre-op that it may require a
second fat transfer months later if there is not a 100% “take.”
 Another
option is to “fill” the defect and to correct the asymmetry with Voluma. This
is injected deep to the skin and placed into the subcutaneous space as well as
into the muscle. This can last twelve months or more and can be repeated as
necessary. My patients like this approach because if is non-invasive. 
Good
luck!
 

Facial sculpting and contouring can be created with well-placed fillers (Voluma, Radiesse, Bellafill) and Sculptra, which would give improvement in facial balance. Fat or implants are alternatives. I recommend getting a formal evaluation with a facial sculpting expert. Best, Dr. Emer

A facial fat transfer is definitely an option to address your concerns.  I would first meet with a Board Certified plastic surgeon to weigh all of your options.  Facial fillers would be a good place to start to get an idea of what your endpoint will be after a fat transfer to the face.  Facial fillers offer very little downtime as compared to a fat transfer.  Best of luck!