Pro tip: If you’re hesitant to go for a full-blue moment, match your shade of blue to your skin’s undertone, says Hernandez. “Cool and neutral skin tones can wear most cool-toned blue hair colors, ...

Even if you have dark hair, there are plenty of options to help you transform your locks into a magical ocean-inspired hue. The best blue hair dyes for dark hair have highly pigmented formulas that ...