In verse 31 of Surah Noor and other verses that mention the limits of hijab, it is suggested to believing women to wear hijabs and scarves properly. Jilbab is a loose-fitting dress with a long skirt that covers from the neck to the wrists and ankles. And Khomor was a scarf that covered the necks and bulges of women's breasts.
But according to cultural interpretations and evidence, scholars and jurists of Islamic religions have different views on the limits of women's hijab, which is sometimes more strict.
But they all believe that a hand that is decorated with a ring or lacquer, etc., should be worn by a non-mahram. In the case of the face as well .. if the face is decorated, it should also be covered by a non-mahram. Verse 33 of Surah Al-Ahzab is about forbidding adornment and self-adornment.
But in Islamic countries, what you see at the city level, as usual, is based on local cultures and their personal beliefs. And not according to strict Islamic law. For example, all countries have driving laws, but do all drivers in the city follow all driving rules ?! A significant number of people in Islamic countries are Muslims who do not abide by Islamic law and act according to their own tastes.