Is there a men's hair product for this?

I'm a female, so no it's not for me, but my family member has a bald spot at the back of his head (horrible haircut). He has thick hair and roots, but not much, so I need a hair product that will blend in and hide the bald spot, not stand out and/or bulge out of the thin forest. I need a black BLACK black kind, but I'm not sure what product we should be looking for. Please help! Thanks!Is there a men's hair product for this?
rogaine is all you need for your hair.Is there a men's hair product for this?
Probably Red-Head or Tresemme.
He could try something like a hair color product to cover the spot..but if its bald really there may be no fix besides letting it grow back! Sorry