7 of the Truest Blue Hair Colour Ideas & Formulas

Formulas Colour Trends
Formulas Colour Trends

Good news for your colour-brave clients: blue hair is trending once again, and there’s no limit on the shades they can work – from icy aquas to muted navies. Whether deep and dark or bright and bold, true blues are big news for this season, as seen on Lady Gaga, Billie Eilish and Ciara.

But riding that blue wave takes plenty of prep and post-colour maintenance. Not only have you got to achieve the right base for their shade, but you’ll want to help clients maintain their hue too. Here, we reveal everything you need to know about creating a true blue hair colour, from choosing the perfect formula, to locking it down with the best colour care routine.

Back of woman’s head with long, wavy, bright blue hair, created using Wella Professionals.
Back of woman’s head with tousled navy blue hair, created using Wella Professionals.