When men approach, brother. They are to put a veil on their faces until they pass away. Otherwise, Hijab only (covering the hair only). The woman is not obligated to walk fully covered all the time like they do today.
Again, in both Hajj and Salat, women are Commanded to not cover their faces. And Hajj and Salat are done in public, especially the Hajj, where there are thousands of men around.
Take care,
Osama Abdallah