I presume that you haven't yet visited a dermatologist. Why if I may ask? If you have visible scalp then you will need treatment. Only shampoos never help. And treatment is possible only after a proper examination to diagnose why you have visible scalp. These days women are getting female pattern hair loss where once the condition triggers the hair starts be becoming sparse making the 'scalp visible ' . I can't be sure if you have the condition without seeing. So, visit a dermatologist near you. You will benefit.