Well, for blond I do white followed by a couple of yellow coats, then a fresh white on the hair that is going to be highlighted and then yellow on that again.
Black hair is... well... black with some matt varnish. Probalty would add some fortress grey on certain parts to get some aged look.
Brown I do by painting scorched brown followed by highlights of bestial brown and snakebite leather (or other brown or mixes, depends on my final result).
Now that I think about it, I know which head you meen and he have this shaved military look that is hard to highlight. You could drybrush it with the lighter color in stead.
Black hair is... well... black with some matt varnish. Probalty would add some fortress grey on certain parts to get some aged look.
Brown I do by painting scorched brown followed by highlights of bestial brown and snakebite leather (or other brown or mixes, depends on my final result).
Now that I think about it, I know which head you meen and he have this shaved military look that is hard to highlight. You could drybrush it with the lighter color in stead.