It wouldn't be just the hair, though. It would include smooth movement of the head, neck and shoulders (as well as some facial expressions). My initial thought was to take some of the Kozaburo hair models - some of which have individualized strand "groups" and animate that in Poser Pro Pack. There's no way it would compare to actual hair systems in the higher-end software, but it would be a great excercise in creating a smooth overall motion. Poser has a wave deformer that might be useful, come to think of it.

Before they made me they broke the mold!
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