Word of advice, always reset your Diffuse_value to somethin less than 1, preferably starting @ 0.8 (80%).  Most objects realistically do not reflect diffuse lighting @ 100%.  Reflection_Lite_Mult is evil and should not be used under most conditions with the exception of reflective surfaces. 

In the skin shader, you have an active diffuse_color/value with an alt_diffuse connection as well as an active ambient channel.  Not a very good combination because this node arrangement was created for a different Poser version.  You are multiplying your diffuse values more than necessary.  To correctly fix this, using what you currenly have, change your diffuse_ and ambient_values to 0 to deactivate the channels.  Change the color chip at Alt_diffuse to white from the gray.  And uncheck the Reflection_Lite. 

The other alternative to the skin shader, use Snarlygribbly's EZSkin script to replace this skin shader with a better set for P9/PP2012.  Link:

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2841322

You will need to simplify your current shader by plugging the actual image maps to the appropriate connectors on the PoserSurface, but the results will be far better.