keep dirt out of your body.
Hair can help you in ways such as " If you need to donate hair to a cancer survivor".
Blood circulation, body hair, just look up "endotherm" on wikipedia you'll find tons of information.
There are several ways to get rid of excess body hair such as shaving and waxing.
Hair and fur
They help the body asorb minerals and vitamins, which the body uses in many ways.
From my research I was not able to find a vitamin that helps with hair loss. However they do have other ways that you could help get your hair back. I would suggest trying hair restoration products.
Hair and fur help organisms retain heat.Keeping you warm and protected.
If you trim your hair a little it will help. Also, if you keep your hair groomed and brushed and healthy, your hair will grow faster. If you really want to, you could get hair extensions.
it stops your hair from ripping of and coming down
It helps keep your head warm, but if you have long hair and it hangs in your face, the oils help create acne!! agh!
You would use hair gel to style your hair. It gives your hair support and you can fix it in many different ways. It gives your hair body and makes it look thicker.
Armpit hair is believed to have evolved as a way to help regulate body temperature and to release pheromones, which are chemicals that can communicate information to others. The hair can also help reduce friction between the skin in the armpit area.