So lowering the glossy is making no difference at all? My skin glossy settings are usually around 6000-8000 (with a low spec, somewhere around 20, say). I would think 2000 would look very matt.

I'm pretty sure you need to look at the hair. Out of the box it probably has high spec or glossy.

I think of the regulars on the DAZ thread did a lot of testing on this with some red hair, a good while ago, but I can't recall the conclusions.