Baldness following a temporal brow lift is getting larger. What can I do to halt the process and to reverse it? (Photo)

This is unusual after brow lift.  There may have been some decreased blood flow to the area if too much tension was placed on the wound.  Any trauma can also cause some hair loss.  If just traumatic, it will start to grow back.  If from poor blood flow, some of the follicles will be gone.  I would go see a hair transplant specialist now to see what they would recommend.  They may have some tricks to help stimulate the follicles.        

My preferred technique to lateral brow lift has been a pre trichial, trichophytic subcutaneous approach and never had a hair loss issue. Never understood the legitimacy of the more complicated techniques with nary any better results.