Hayley Williams's Go-to Shampoo for Colored Hair

There's coloring your hair, and then there's serious, full-throttle, this-one-goes-to-11 hair color. Hayley Williams is the dictionary definition of the latter. The Paramore singer is such a dye-hard she spent four years working with hairstylist Bryan J. O'Connor to develop her own brand of hair color. With all of that experience in her back pocket, you'd expect nothing less than the best from Williams's hair-care routine-after all, keeping that kind of high-octane color fresh is no job for amateurs.