asalamoalaikum
check out the ayat number 59 of surah al-ahzaab, ayat number 55 of surah al-ahzaab, ayat number 31 of surah al-noor....... so u will make urselv clear .... and when it comes to this that y is it not allowed for a muslim women to let a cloth touch her face .....u cant ask y ?? itz just a rule of shariah ..and secondly i m not aware of the reason ...of it .....i just learned and know and have done ....this that itz compulsory for a muslim women to cover her face by hanging a cloth over her face and when it comes to this hadith narrated by hazrat ayesha (ra) just look into the explanation it clearly sayz that yes she did hide her face when she passed by a non-mehram but she used to lower her jilbab...by lowering it, the cloth dint touched her face .....