Face Generator

FaceGen (Face Generator)
http://www.facegen.com/index.htm

Create realistic 3D human faces from 1 or 2 photographs or at random. 3D face shape & coloring controls. Apply faces to any polygonal mesh and UV map. A free version is available which has the full functionality of the paid version except for exporting to external 3D formats and displaying the 'SI' logo on the forehead, otherwise the cost is around $299US. The hair options do seem limited however.