Hair joints set up

This is a follicle driven hair setup for planer hair.
-create joints shaped for the hair
-create a cv curve (vertex points to each joints).
-select cv curve. under (dynamics -> hair) assign curve to hair system. (attachment only to base, not both ends).
-under animation, make an IK spline -> option. Deselect (auto make curve) and (auto parent).

Make a group called 'notouch' and put the 'output curve', 'hair system' and 'IK' into it.
Use 'parent constraint' to constraint the 'joints' and the 'hairsystem follicle curve' to your character's head joints.

Extra notes: Your character can be scalable with this. The hairsystem follicle curve is able to follow the head but do not parent the rotation to it.