I would like to see an example, as well as the skin shader. IIRC there are old skin shaders (pre-Gamma correction) which add some red to the skin. If you use one of those, that may be your problem.

But it's hard to say without an image.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.