What is the ruling on the niqab, and what is the ruling on setting a time for wearing it gradually?

A woman must cover her body. She is permitted to wear the niqab, and she is not required to wear a specific outfit or color. The important thing is to be covered and not to attract attention. She may wear the niqab whenever she wishes. If her family commands her to wear the "sadl," which is covering the face completely, this is better than the niqab that shows the eyes. Obeying the guardian in this matter is obligatory if his command is for good.