How many grafts do I need? (photo)

The number of grafts depends upon a variety of factors including (1) The thickness of your hair shaft (to determine your hair mass index), your donor density (to determine your lifetime donor supply of hair which is finite, (3) what areas you need to cover (not clear from the photos) and best covered in a conversation over the phone or an in-person evaluation. I would question if you adequately treated this first on the possibility of reversing the hair loss.