American Society of Portrait Artists
The American Society of Portrait Artists, the largest portrait artist patron organization in the world, is an international association dedicated to furthering the fine art of portraiture and supporting the individual artist. The Society is lead by a distinguished advisory board of directors, all dedicated to developing an agenda that will increasingly provide every possible resource for serious portrait artists. The Society provides a means for networking with portrait artists and is a forum to provide valuable information, research materials, and links to seminars.
So far I really like this, much better than Das clay. It has no unpleasant odor and is very smooth, takes detail well. Has a distinct leather hard phase where you can work that way, really neat. Hasn't been long enough to really test finished strength though as that takes two weeks (it's dry though in a day or two).