In addition, the hijab's role is to keep the head and hair covered. So, in the case of long hair, it is generally pulled back into a bun. (Image courtesy of Google) PS: I don't wear a hijab, but I've seen how others do. It seems like a practical thing to do. The hadith about Hijab is reported by Al-Bukhari as follows: "Allah's Messenger (may peace be upon him) said to A'isha, 'O A'isha! If a woman wears a garment that covers her from head to toe, including her hair, then she is not guilty of sin.'" This indicates that covering one's hair was part of A'isha's practice. However, Bukhari did not specify whether this was a requirement for all women or only for Muslim women. In any case, since A'isha was a major source of knowledge about Islam for many people, including non-Muslims, having knowledge about the hijab should help clarify some misconceptions about Muslims.