Yes. You can also save it to your Poser library. That way, you put the hair on any character, any time you want.

It can also help the "look" of the hair. For example, look at the Poser 6 skullcaps (they're part of the dynamic hairstyles that come with Poser). They are colored a brownish color, to help keep the skull from showing through the hair. A properly textured skullcap could be even better.