Hair and Nails

Black mendhi

Q: Someone has asked me to mix black mendi for them so they can apply it to the white hairs of their beard. I heard black mendhi or black dye is impermissable. So if I mix red mendhi with the black mendhi and make it dark brown will this be allowed?

Women cutting their hair

Q: I have long hair and I refrain from cutting my hair after I came to know that for women it is impermissible to cut their hair. I observe hijab Alhumdulilah and I was wanting to have a nice hair cut not for any other purpose just because I want to have a nice hair cut once. Will it be permissible to cut my hair or is it haram?