For blue around the lips (and this IS the only fix...):

Go into the material room and set the group number on the SSS shader node to a different group other than the one the skin face is in (it's probably 1). Change the group number on the inner mouth, gums, teeth and tongue. That should all clear up for you then. Of course you can also fix all this with EZSkin2 (free). But I normally do it by hand on a shader that's SSS already because it's so easy :).

What's happening is that because all the zones are in the same group, Poser will try and use the WHOLE lot as one SSS object and all the bits that are close together (like teeth, inner mouth, etc) get scaled the same as the head, which will cause this blue color. If you tell the SSS node to scale them each on their own (inner mouth 2, teeth 3, etc) you won't get the blue ;).

Laurie