U.S. scientists have launched a wild theory: they are trying to convince the world that dirty hair – good for you. In fact, it turns out that this paradoxical idea may well lie at the heart of a beautiful and healthy hair. New research conducted at the University of Missouri found that dirty hair a protective function: the secret produced by sebaceous glands of the head and covering her hair, intense absorbed by ozone. Ozone – a toxic gas, which is the active compound of oxygen and in large quantities can cause serious harm to human health. The experiment revealed that dirty hair absorbed seven times more harmful than ozone friendly.

But how does this affect the status of hair, scientists have not figured out. In addition, the scientific community it is widely believed that the secret to fat covering unwashed hair promotes faster hair growth. It protects hair from environmental influences. As a result, they are cut and less perishable, and, indeed, grow faster. A typical error in the same time, it is undeniable that unwashed hair – one of the biggest mistakes women. "When I walk down the street, I often notice that women have unwashed hair, it's probably the biggest mistake of style, – the famous American designer Isaac Mizrahi. – You know, People often apologize for the dirty shoes, but nobody does not occur to apologize for the messy hair. In my opinion, unwashed hair, there should be no forgiveness, because, after all, there is a hat.