Hi Jimmyjohn...

We will need to know what version of Poser you are using. It makes a difference to what you can or can't (easily) do.

Skin shaders vary enormously between vendors, and often between characters from the same vendor. There are lots of variables to play with... to do with gamma correction, lighting, skin shaders, etc. etc... but we don't know what to suggest unless we know your starting point.

So let's also see a render, and your lighting setup, please.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)