I get sore scalp too sometimes. I was just thinking today that maybe it's from co-washing too aggressively? When I first started CG, I didn't really massage my scalp long enough when co-washing so it never seemed to be clean enough. So I began to co-wash for longer and I think I sometimes massage my scalp too hard. Any thoughts?
My hair specs:3a/3b, fine/medium texture, low porosity, low elasticity, medium density

low poo:
live clean fresh water, TJ nourish spa
condish:
suave strawberry & coconut, live clean, LVPNG, TJ nourish spa
styling:
AVG, HESMU gel, HESMU mousse
treatments:
egg PT, ACV rinse