Hair and Nails

Q: My daughter is 15 years old and has knee length hair. The weight of it is causing headaches almost everyday. Will it be permissible to trim a ruler
length of hair?

Q:

1. Can men remove unwanted hair using hair remover other than a blade, cutting machine or razors?
2. Similarly can women remove hair using blade or safety razors?

Q: If there is facial hairs on forehead and upper lips (moustache), is it allowed to remove?

Q: Is shaping eyebrows allowed in islam?

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?

Q: Can tea nd pomegrant leaves be used for hair coloring? Is it allowed or not?

Q: My hair is very long. I do not cut it anymore, but I am in my last month of pregnancy. My head gets hot so I don't use hair dryer. Then I get a headache. Also when a baby is born, I feel I may not cope, my hair is thick. Is it possible to cut my hair, just this once?

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?

Q: What is the most preferable sunnah regarding keeping hair for males as we know that Nabi (Sallallahu Alayhi Wasallam's) hair was long except one 4 or 5 occasions?

Q: Is it true that women are not allowed to curl their hair? If yes, please may you explain why, with reference to any hadith etc.