The shade itself is one that’ll suit all hair types, but note that’s it’s one best achieved by your colourist who’ll use a toner, like Redken Shades EQ, on a dark brunette base to add extra dimension and depth.

Plus, we love that it’ll make hair so glossy that it’ll look fluid – which also plays into the high-shine trends we’re seeing a lot of recently.

Here, we’ve rounded up some serious inspiration – ranging from more obvious shades of deep, inky blue through to subtle, barely there tones that are only really noticeable when the light hits exactly right.

Glossed ink is the blue hair trend we’re desperate to try (and it’s more wearable than it sounds)