Greasy hair protect from poisoning with ozone
Dirty hair, probably, carries out an important protective function, believe American scientists. On their data, sebiferous, which covers hair, intensively absorbs ozone - an active compound of oxygen, which in high concentration can serious harm health of the person.
Researchers from University of Missouri have exposed to ozone samples of dirty and clean human hair. As it was found out, within 24 hours of an experiment dirty hair absorbed on the average seven times more ozone, than clean hear.
Apparently, owners of dirty hair considerably reduce concentration of ozone around themselves in comparison with the general level in a room.
However, an extent of dirty hair’s protective effect is not clear: the additional researches carried out by scientists have shown that ozone’s reaction with dirty hair results in flying compounds, which also can cause irritation of respiratory tract.