You must know the guy.

Just experimenting with Shave at the mo, tried using separate caps within the head, which make the styling process much speedier, but not sure I will want to keep making custom blends for those to match the head, so trying using a copy of a non-renderable base head underneath, which although slightly slower to style with, means I can just feed a lower level copy of the expression from Zbrush into the rig. swings and roundabouts, but hopefully this way will work best as I don't want to change my mind again.

Oh, just as I was typing this message, maya crashed.

If at first you don't succeed to render without a crash, try try again

Gio