Muslim women wear hijab to fulfill their religious obligation of covering their awrah (parts of the body that should remain private) in the presence of non-mahram (men they could potentially marry). The Quran commands women to dress modestly and lower their gaze. It is obligatory for women to wear hijab once they reach puberty, as they are then accountable for fulfilling religious duties. Hijab must cover the entire body except for the face and hands, and should be loose-fitting, opaque clothing that does not draw unnecessary attention.