Watch this girl go from brunette to blonde with one flick!

Time and time again, the internet produces things that make us question EVERYTHING.

First there was THAT dress, then there was that brain destroying jacket, but now a new sorcery is upon us.

Colour-changing hair has become the latest in a stream of magical things with no real explanation. 

Yesterday, a Reddit user Achoo_Gesundheit racked up almost three million views in 21-hours on a video of her hair. 

Prepare to be totally mesmerised…

WHAT THE HELL?

At first it seems as though this girl is a brunette, but after a quick hair flip she reveals what appears to be a full head of platinum blonde hair.

This hair style is officially known as ‘top deck’ hair… yes like the Cadbury chocolate bar. 

You know the one…