It should be possible to use blender nodes to let the shader know if something is hair or if it isn't. You would either need a control map just with the hair or you would have to grab that information from the original texture. If you have that information, you would feed that into the control channel of a blender node and attach your shaders on the color nodes. That way it should be possible to create a shader which uses different nodes for the skin and the hair.

Anyone know if Jepe's textures have a "hair map"?

 

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

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