Rodney Sinclair is a Professor of Dermatology at University of Melbourne . Claims that by a number of years of us have lost colour in 50 per cent of our hair . Premature greying may be a sign of anaemia a thyroid condition , he says . And scalp hair is usually lighter than pubic hair , which often has 'red ' tinge .
Rodney Sinclair is a Professor of Dermatology at University of Melbourne . Claims that by age 50 , half of us have lost colour in 50 per cent of our hair . Premature greying may be a sign of anaemia a thyroid condition , he says . And scalp hair is usually lighter than pubic hair , which often has 'red ' tinge .