It's a deep hydrating conditioner — like a hair mask, almost —that contains a small amount of pigment used to either preserve and amplify color-treated or natural hair or neutralize unwanted brassy tones.
So if you've been dreaming of going purple without bleach, it looks like your wishes have been granted.
Brown-haired people are often left out when it comes to color that doesn't require dye. "It's hard to see cool-toned colors (like purple, blue, or green) when applied over brown hair, so we doubled the warm pigments!" OverTone wrote on Instagram.
Using disposable gloves, apply the treatment generously to wet hair. For even brighter results, use on dry hair. Wait 10–15 minutes and rinse clean. It's really that easy! Just make sure not to let it spill on your tile floors or carpet.
So join the crowd! If you're not a fan, you can just wait for it to wash out on its own.
"OverTone equates to semi-permanent, which means it'll fade with every wash & ~usually~ comes out completely over time, but everyone's hair holds color differently. With any OverTone product, continue use for color maintenance and discontinue use to begin fading," the brand claims.
And if your hair is blonde, there's also a purple treatment for you.
Of course, any "fashion hair color" is going to show brighter on hair that's naturally light or has been chemically lightened — that's just scientific fact. If you want something vibrant or pastel and you have dark hair, it's best to get it lightened over time by a professional.
Still, the purple for brown hair treatment is a damn good alternative.