Hi Choo,
Please see the following tutorials here.
Skin Shading with Mental Ray Chapter One: Working with the Fast-Skin Material
Skin Shading with Mental Ray Chapter Two: Mapping Color, SSS Layers and Bump
Skin Shading with Mental Ray Chapter Two: Chapter Three: Layering Specularity and Reflections
That should give you all the information you need
Imagination is more important than knowledge.
Last edited by NextDesign; 28-12-2011 at 07:17 PM.
Reason: Fixed link