(El Cid left a comment asking if the mohawk was thePirate and I or Matey)
He lost his hair in a "U" shape, leaving the mohawk on top and 'old man hair' below his ears. The hair that was lost has now grown back in, it's simply Very pale blonde (like thePirates apparently was) and fine so it doesnt show up at all in pictures or video.
It's hard to see in real life too most the time.
My hope is that the dark gets pale or vice versa, thePirate wants it to stay two toned.