Is it obligatory for a woman to wear the full legal hijab at home in front of non-mahrams, such as her husband's brother, or is it sufficient to wear loose clothing and a head covering?

A woman must cover her entire body in front of non-mahram men, including her face and hands. Her clothing should be loose and not provocative. A woman is permitted to sit with her husband's relatives if she observes the legal hijab, covering her face, hair, and the rest of her body, provided there is no suspicion or private seclusion involved. It is even more imperative for a woman to observe hijab in front of her husband's relatives, as they enter and sit with her without objection, and this could lead to undesirable consequences.