US scientists have developed a hair dye that contains miracle material graphene, which allows hair to be coloured without causing breakage or frizz.
A team at Northwestern University in Illinois used graphene oxide to create the dye, which changes the colour of hair to black.
In their findings, which have been published in research journal Cell, they state that ? unlike normal dyes, which use chemicals to cause the change in colour ? the graphene-based dye is nontoxic, meaning it doesn't cause skin irritation or hair damage.
The graphene-based dye prevents hair frizz and breakage, as shown in this image, where figure C is the only graphene-treated sample
"Current permanent hair dyes generate colour by doing a set of chemical reactions, right on top of your head," Jiaxing Huang, one of the scientists on the project, told Dezeen. "If not properly done, the chemicals could cause skin irritation," he continued. "The graphene hair dye changes hair colour by coating the hair ? so it is a lot easier to do and does not use any harmful organic molecules."
Graphene is one of the strongest substances known to science and boasts a range of unusual properties, for instance, it is transparent, and conducts heat and electricity. Some of interesting uses of it include for ultra-thin condoms and night-vision contact lenses.
But Huang's team saw this project as an opportunity to exploit the material's adhesive qualities.
"Many people have thought abou...