“Expensive brunette is not an all-over colour. Any ‘expensive’ colour feel is a professional style and so you want to stay clear of box dyes,” advises Curran. “It’s important to speak with your colourist and discuss your skin and eye colour/tone to uncover which brunette shades work for you. As with tones of blondes, there are many different tones of brunettes. For example, rich chocolate, coppers, warm golds, honey and cool brunettes.

“If you’re interested in trying out an expensive brunette colour, explore dimension, high shine, depth, intermixed tones, and custom blends with your stylist.”

Curran’s final tip is the age-old classic: take in reference images to make sure you and your hairstylist are on the same page before any cutting or colouring gets underway.

“Expensive brunette” is the darker hair colour celebrities are turning to this winter