If you're all about keeping up with the latest hair colour trends, like reverse brunette balayage [1], and learning everything there is to know about complicated techniques, like double process hair dye [2], then you'll love getting a behind-the-chair look at how the professionals apply colour in the salon. These processes are far more complicated than Angelina Jolie [3]'s DIY bleach and permanent marker [4] at-home hair colour job! Even if you've had it done yourself, it's impossible to get a proper insight into just how intricate the work is. We've rounded up Instagram videos from some of the most talented folks in the business so that you can take a closer look at how stylists use foils, bleach, colour, and toners to create really cool modern results. You'll be dying to get in the chair for a dye job for yourself.