The hair is dead matter. Seriously, you think that hair is only dead matter? Are you referring to the hair shaft or, one of the most complex structures that has the human being (pilosebaceous system)? And, curiously it is only formed in the embryonic period, where it is supposed to be one of the moments where the superfluous, is not the most important. Think about this.
Friend Dench, Sign up for this other thought of mine; "Hair is vital for human life", I risk to point out that survival would be very difficult, if not impossible, without the help of what you our friend call : "Only dead matter."