Human hair is a simple thing made of keratin and dead skin cells. Its function is to prevent heat loss from a person's head, yet it also causes women to weep, men to buy Porsches and people to spend billions each year on its upkeep.
Such a simple thing as human hair leads to all kinds of complexities. Here are examples in which hair is more than just a dandruff jungle, so check out these 5 things you didn't know about human hair.
(via Neatorama)
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