that head plastic girl hair thingy then hair moving like an entire can of hairspray was used just recently. Terrible video demo needs hair that is long or wild to do a real demo. Likely still in alpha pre beta stages and only the hair tips seemed to move. Wouldn't surprise me if the code is large so it's limited since it would use way to much processing power to do more than one or 2 people and on a normal system would crash on a ryzen with on chip graphics over powering the processing so other stuff like in that video like skin textures have much more minimized bit depth to compensate adding hair flowing. I expected more like an Ichigo from Bleach type hair as a baseline demo video. Instead a Demi Moore or Winona Ryder hairstyle. They need to use a long and wild long haired character in quick movement with good textures to skin and clothing also to prove it's worth a fuck and shrink the code might be the direction so everything is fast and HQ realism.