L’Oreal’s Colorsonic hair dyeing device takes the guesswork out of coloring your hair at home, distributing dye to your roots ...

But that’s not so. She uses L’Oréal Paris Le Color Gloss One Step In-Shower Toning Hair Gloss, according to InStyle. And she’s not the only one who loves it, as thousands of Amazon ...

Salon color is often customized and adjusted based on your hair’s undertones, condition and history, while box dye is one-size-fits-all. That’s why at-home results can sometimes look off or ...