A million thanks, I'll try this solution as soon as I return home. By the way, when I import a model with PoserFusion, that model usually divides in 4 (or more) separate meshes. I suppose I must apply Unwrap to every one of them, correct?
And thank your for the tip on the figure's hair as well, I hardly ever used Strauss, and this is very interesting.
If the problem gets solved, I will also try playing with VRay SSS material, to see if the skin will trully improve.