I've found the copy/paste functionality pretty useful in grabbing faces for my own private changes between mods, but hair is another matter. Special styles aren't in the vanilla game, or affected apparently by copy/paste. I have extra hair and eye styles through the Race Balancing Project, but I have to check the appropriate ESP in order to load it along with the mod I want to copy into--and then, in order to restore RBP, I have to uncheck it, because it's merged via Wrye. You see my problem? Once it's unchecked, the companion mod I'm copying the hair into no longer "sees" that hair style as available. The styles are merged, but I suspect the mod was never designed to grab hair or graphics from anywhere else.

Is there someway I can set it to do so? To grab the RBP hair styles?

You need to make RPB as its master: http://cs.elderscrolls.com/constwiki/index.php/De-Isolation_Tutorial