VSS works on hair and props, not just cr2 characters. There is a bug, though. It won't act on hair if the hair is a prop parented to a figure. When I have some time I'll fix that. Meanwhile, you can work on the hair shader as long as the hair is free, not parented. I suggest that it is better to test a hair shader on just hair anyway, without wasting time rendering the figure. Once you have the hair materials set up, save the hair prop or its material collection for use later, without VSS.

Last night I once again tried to do a hair shader. (See attached render) I used VSS here. My problem with a hair shader is that the anisotropic node blows up in certain angles. This is what I've always run into, and why I didn't publish a hair shader yet.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)