This character was done for an hostage of the game Rainbow six vegas. It was supposed to be only for reealtime purpose, but considering I found it cool, I decided to push a bit the high res render ( done in zbrush).
A generic base mesh (done in max) is used as bas, then sculpted in very high res to rech skinpores details.
There's no specular map in zbrush, all the skin texture comes from the micro details and the shader.