So, for the insider intel, we asked some of the world's top hair colourists to fill us in on the autumn hair colour trends we should definitely have on our radar. Every year, clients start asking for those warm, expensive-looking brunettes, like espresso, chocolate, chestnut, and soft mocha tones with just enough dimension to keep the hair moving,” notes top celebrity hair colourist and Paul Mitchell Pro Global Colour Artist, Matt Rez, who counts Dua Lipa, Hailey Bieber, Lori Harvey, Tate McCrae, Adele and Penelope Cruz among his clients. Meanwhile, top celebrity hair colourist, Tracey Cunningham who counts Emma Stone, Jennifer Lopez, Khloe Kardashian and Lindsay Lohan among her clients, notes “deep glossy chocolate brunettes with a subtle caramel melt,” will rule.