The FDA has been urged by three US Congressmen to do more to control formaldehyde in hair straightening products. Last year, FDA sent a warning letter to the makers of “Brazilian Blowout” after finding that the hair straightener contained formaldehyde, in significant quantities, though it was marketed as “formaldehyde free.”

While the makers of Brazilian Blowout have settled a lawsuit regarding misbranding, and promised to put on a arming label stating that it can release formaldehyde on application, the product is still misbranded, according to the Congressmen, who have urged FDA to do more.