When you have a dry scalp, it feels itchy and irritated. But have you ever wondered why the issue of dry scalp arises in the first place? Well, it’s primary because the natural moisture defenses of the scalp get damaged. The external layer of the skin in a healthy person is arranged in a manner as that of a brick wall. Furthermore, it is this brick wall structure that keeps your skin’s moisture locked. As a result of which, your body stays hydrated.