More than likely it’s your lighting set up. But there is a Bright/Contrast node and also a Gamma node in the node editor to work on the rendered scene.
i would bet that it is either my material or my lighting. If you could give some hints as to HOW to go about fixing this?? https://dl.dropboxusercontent.com/u/5398233/skinshade4.blend is the file im working on. btw i am using Blender Internal and i do not have a node based material.