It looks like a joke with the *use this step if you dont like using head geo* comment.

You cant make a control follow a mesh you need to make the control follow the rig - the rig is the point of all control, ie a control is constrained to a specific point on the rig - thats character basics, to have a control follow a mesh will give you a double transform, anything skinned is basically controlled at rig/joint points not via mesh objects. If a control is for the mesh/geo that has a blend shape, you need to give it specific attributes with integer values that would range from 0-1 and coincide with the blend shape, ie a mouth opening shape - open is 1, closed is zero.

does this make sense??

but controls always constrained via the rig...never the mesh, the mesh hold attributes. I think you're confusing yourself too with your nodes. If it helps I did a rig tutorial...https://simplymaya.com/autodesk-maya...low/tpage/195/

but your follicle just requires a parent constraint to what ever you need to follow.....

cheers

J