Make up

Applying nail polish

Q:

1. Is applying nail polish during haidh period permissible as we don't have to make wudhu to pray fardh namaz and when we make ghusl we remove it using nail polish remover?

2. Does applying nail polish amount to imitating kuffaar?

3. Can we use other make up items like lipsticks, mascara etc?

4. Are we allowed to dye (water proof dye) our hair other than black when in haidh period?