Poser has clunky lights, and Ambient Occlusion sometimes leaves undesirable artifacts.  For animations and such, having a nostril material is just quicker to render.  Also...A LOT of Poser users still don't know how to use the lights for diddly-squat. :laugh:

It's something that should have been fixed a long time ago.

I cannot save the world. Only my little piece of it. If we all act together, we can save the world.--Nelson Mandela
An  inconsistent hobgoblin is the fool of little minds
Taking "Just do it" to a whole new level!