When it comes to the realistic simulation of humans and humanoids, the realistic modeling of hair is one of the last remaining barriers. Thanks to the ever-increasing power of computer chips, and billions of dollars of R&D into human kinetics, gait analysis, and musculoskeletal biomechanics, we can now model the human body and face with superb realism . Hair, though, with its millions of interwoven and interrelated strands, is really difficult to get right. For the most part, male heroes are just given short hair, and females — despite a disproportionate amount of effort on behalf of the 3D artist — are usually stuck with a dull, lifeless hairdo. at Siggraph 2013 (yeah, I know, a lot had realy changed since then) Princeton and the University of Southern California researchers presented a demonstration of beautiful, bouncy, realistic hair could be just around the corner. At this point you should watch the video below.