Icy-blue hair to match those ~ocean eyes~? Yes, pls. Just know that a light-blue shade like Billie’s will fade fast, so try to limit the number of times you suds up each week, says Welch ...

2018 might have been a time for pinks and purples, but this year we’re feeling blue. Kylie Jenner kicked the blue hair trend into superdrive ... the blue will fade fantastically going through ...

Like a bad spray-tan, hair ... into hair, not stripped from it, meaning there's stuff to wash out), and those darker hues can get warmer (and brassier!) as they fade. Enter blue shampoo.

Isn't there something so calming about the way this dark hair fades into a moody gray-blue? This smokey color works really well if you have cool skin undertones (and if you don’t? Get it anyway.