Simply put, Tracey Cunningham is a hair color god, responsible for the perfect hues on some of the biggest Hollywood names like Emma Stone, Halle Berry, Jennifer Lopez, and Margot Robbie. On this episode, she dishes on how to achieve those coveted looks, the colors her clients are requesting the most this fall, and just how to take care of your color—from the pre-salon checklist to the best ways to preserve color, and everything in between.