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$42.50
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100% vegan, cruelty-free, and certified by Leaping Bunny and PETA, Overtone Healthy Color Duo in Cosmic Cobalt is a two-step, color-depositing system designed to add and maintain a bold, electric blue tone while keeping hair soft, hydrated,...
Reviews
4.6
41 ratings
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So many compliments
I've been rocking the Cobalt Blue for a while and I get so many compliments on my hair color. I have quite a bit of white hair and while it doesn't cover the white completely, it turns it into the prettiest silver blue shade.
D
Dan · May 1, 2026
Love the color! Daily conditioner, not so much.
This color is absolutely gorgeous—I’m obsessed with it. Every time I catch my reflection and see that vibrant blue, it genuinely makes me happy. The color-depositing treatment mask is fantastic; it makes adding a fun pop of color to your hair easy and relatively mess-free. The daily conditioner, though, is a different story. It stains your hands, so unless you’re wearing gloves in the shower, you’ll likely end up with blue-stained hands for a day or two.
T
Tara · April 19, 2026
Bring My Blue Hair Back
Every time I use treatment mask always brings the blue back and people will compliment my hair again. One thing about the new version of daily conditioner is that it leaves color dye on my hand for longer, harder to wash off, that's where that one missing star's for