i found this article that contains knowledge on how to create a realistic subsurface scattering effect for a convincing skin. Thought i should spread the word here and pin this nugget of wisdom down:
http://blog.lucasfalcao.com/p/four-tips ... r-sss.html
One could also try to bake a map from the pointiness of the mesh and use that as base for a specularmap:
It could look like this: