Question

What is the function or purpose of hair?

Answer 1

Hair performs several purposes, including protection, sensory input, thermoregulation, and communication. Hair on the head, for example, shields the skull from the sun.

Hope this helps

Answer 2

One primary function of hair is to insulate the body. The reasoning for this is how it serves almost a barrier between cold air and skin. It also keeps the warmth between skin and hair, making the body warmer.

Not sure if this is correct but I hope it helps :]