Sorry - the head is another mesh - but the same thing, about 45 minutes in C4D, and maybe an hour in Mudbox. The texture was a quickie applied in C4D as a test for this assembly - oddly, I made it using Vue and Photoshop.

I'm not very good at it yet, so you can see it's a bit on the basic side. The whole thing also only has about 190,000-ish polygons - I could easily keep subdividing it pat 600,000 polys and have ultra-fine detailing all over the place, but I'm gonna save that for my Bump and Normal maps I'll just make in Photoshop. As it is, I just made some crude veins and left it at that.