Here's a skin shader I've been working on for a while. I'm currently using it on multiple characters, including Eva, Nala and Zane.
Blend file includes an example object using the node.
Change log
v1.0 - Initial release
v1.1 - The Nose/Pads skin texture was missing from the blend file
v1.2 - Saturation is now preserved when using the Discoloration option
v1.3 - Bump node has been connected to the Clearcoat normal input