The way I've been doing Poser hair isn't a secret or anything, I do cylinders and cylinders inside cylinders, all overlap so most places you have about 4 or 6 layers of mesh. The cylinders are all mapped (cylinder mapping, oddly enough!) before they are bent around the head. The banding is the hard part, of course, and this isn't something that I compleatein one sitting. I've tried other methods, the strip hair in Freestuff uses layers, but this works best for me. The problem with anything like layers is from the side there is no thickness, but with a cylinder you always have something. I also think it approaches how hair really is closer than most methods. The pic is my new Mermaid hair, which should be up for sale pretty soon, the Hollywood hair and SMV hair use the same system.