Answer:
(Fatwa: 362/193/D=1432)
It is necessary to cover the face from non-mahram as well, though by nosepiece or chuddar. But since there is more satr in using nosepiece and less chance of falling, hence it is better.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
