From http://www.abc.net.au/science/articles/2008/09/12/2362010.htm http://www.abc.net.au/science/articles/2008/09/12/2362010.ht... > Overall, the researchers f

From http://www.abc.net.au/science/articles/2008/09/12/2362010.htm http://www.abc.net.au/science/articles/2008/09/12/2362010.ht... > Overall, the researchers found hair offered a protection factor ranging from 5 to 17, which is significantly lower that the average sunscreen, which offers a protection factor of 30.