Hi,

If you add Turbosmooth, you are changing the topology of the distribution mesh, and your guides depend on that tooplogy, so the guides need to be recomputed, messing up your hair. This means that changing the topology of the mesh after adding the hair will mess up the hair. 

Now, I'm not sure how you setup your hair, but I recommend adding the hairs to a separate scalp mesh that you can then skin wrap to the main character or include it in the rig. This way you can change the main character topology as much as you want but keeping the hair intact because its on a separate mesh. 

Jeordanis Figuereo (Product Designer. EPHERE Inc.)