“Anyone who wears hair extensions should be concerned.”
Hair extensions worn by millions of women globally may contain chemicals linked to breast cancer, hormone disruption and reproductive harm, according to the largest study of its kind.
Scientists found nearly 50 hazardous chemicals in nearly every sample tested in a range of synthetic and human hair products including wigs, braiding hair, weaves and wefted hair like clip-ins.
The researchers from the Silent Spring institute in the US say a lack of regulation in the hair extension industry leaves the burden of ensuring safety on the consumer.
BBC