Ruling on a woman applying nail polish before performing wudu'

The question: It also asks about applying nail polish before performing wudu': Is the prayer and wudu' valid for one who applies it, knowing that it forms a barrier layer, as you know? And is it permissible for one who applies it to enter the mosque?
The answer: It is obligatory that she does not do this except while in a state of ritual purity, if it is absolutely necessary, although leaving it off entirely is preferable. Leaving off this nail polish is absolutely preferable; because she may become lax regarding it, and it may prevent her from performing wudu'. She should leave it off completely. However, if it is absolutely necessary and she applies it while in a state of ritual purity, then when her state of purity is broken and she wants to perform wudu', she must remove it again so that the water reaches the original skin and the base of the nail.
This is what is recommended, and this is what is obligatory for her, in our belief: she must remove this nail polish when she intends to perform wudu', and she must not pray with it on if she applied it while not in a state of ritual purity. As for if she applied it while in a state of ritual purity and the time for prayer comes while she is still in a state of ritual purity, she prays. But if she applied it while in a state of ritual purity and then her state of purity is broken, she removes it. It is not like leather socks; one wipes over leather socks, but not over this. She removes this nail polish so that she can wash what is underneath it at the time of wudu'. Yes.