Any person with common sense will not doubt that… the face is the chief area of temptation, thus it is an obligation to cover it… Men and women should keep their hearts pure, and this cannot be accomplished except by preventing the means that lead to fornication and shutting down its avenues, the greatest of which is encountering a woman and enjoying a look at her uncovered face, (perhaps) with decorated eyes, arched eyebrows, and dyed fingernails. So fear Allaah O you who call to the unveiling of women, and fear a day that Allaah has prepared for Recompense…
Whoever claims that a woman has the right to uncover her face and hands in front of male-strangers, he has steered away from the truth and correctness. If he is form those who are qualified to make investigations and ijtihaad (come up with rulings), and he is free from deviations, then he receives the reward for his ijtihaad, and his error is pardoned.
However, it is not permissible to follow him in that opinion. But if he is not from this kind of people, then none of his opinions and arguments should be given any regard since the truth has more right to be followed (than individuals).
[Taken from “Four Essays On The Obligation Of Veiling” Ch.4: The Obligation Of Veiling The Hands And Face, by Sh. Zayd Ibn Muhammad Ibn Haadee Al-Madkhalee, Pp. 81-82]