Updated On: 12 June, 2014 03:14 PM IST | | IANS
<p>Permanent hair dyes and perming treatments at salons may contain banned aromatic amines called toluidines that have carcinogenic properties, researchers warn</p>

London: Permanent hair dyes and perming treatments at salons may contain banned aromatic amines called toluidines that have carcinogenic properties, researchers warn.
A new study from Lund University in Sweden has found that hairdressers may still be exposed to these carcinogens.