Hairstyles, Haircuts & Hair Treatments

Q: 

1. Is there any Quranic Verse or Narration that directly prohibits women from cutting their hair in a manner which does not resemble the non-believers or men? 
2. On what basis are women prohibited from cutting their hair in a manner that does not resemble the non-believers or men?

Q: Is it permissible for a women to cut her hair if she is completely covered out of her home?

Q: 

1. I am currently 6 months pregnant. I am experiencing slight difficulty in shaving pubic hair. Is it permissible to have waxing done by a female Muslim?
2. Is it permissible to trim the hair due to split ends?
3. Is it permissible for a female to cut hair in layers?

Q: What are the different lengths of the zulfa and is it permissible to cut the protruding hair around the ear?

Q: My wife is in purdah and she wants to cut her hair in "layers". Is it permissible because I will be the only person seeing it? Will this be regarded as tashabuh bil kuffaar (emulating the kuffaar), because it is not for any fashion reason, rather only for me?

Q: I have a baby girl and we cut her hair. At what age should we stop cutting her hair and grow it long?

Q: Is it permissible to cut one's hair 2 lengths?