Hair and Nails

Q: After a hair cut from the barber shop do we need to wash our head and then enter the home?

Q: Can hair and nails be cut at night?

Q: What does shariah say regarding nose hair, can it be trimmed?

Q: If a person has got a big beard and he has a lot of white or grey hairs in the beard. Is it still makrooh tahreemi to remove even few of the grey hairs.

Q: Is laser hair removal allowed? If yes to which part of the body for males and females?

Q: One or two hairs of a female's eyebrow is very big and overgrown. Is it permissible to pluck these one or two hairs only?

Q: I want to know that if a woman is observing a Shar'ee purdah, is it permissible for her to groom herself in this manner like threading her eyebrows and dying her hair in order to receive extra attention from her husband?

Q: Is it permissible to pluck the hair between the eyebrows as it is not part of the eyebrows?

Q: A person has a bad habit of playing with his beard constantly. Sometimes biting the hair also.

1) Is this considered something disliked in shariah?

2) How can he stop this bad habit

Q: Is having a hair cut in style, which is still long enough permissable for a woman if she covers her head whenever she comes in front of any na mahram and only exposes her hair to her mehrams?