Just an idea, but you may want to try using the Cosmopolitan makeover hair styles. This involves adding hair in just a 2d image format on a layer over your rendered character. Search this forum for details. It works well on stills reasonably face-on, and I`m just experimenting with adding the hair image onto a square prop parented to the head, allowing a degree of possible movement with the head in, say, a lipsynched animation. Downside - limited angles of view for convincing effect; Upside - The hairstyles are awesomely good, and help make your renders so much more realistic ;-)