For years, every time I have my hair colored it's back to brassy and blah within a month. My stylist and I have tried numerous things to correct the problem with minimal success. I happened to be at an event with an aunt who lives in a more urban setting and owns her own salon and I told her about my color issue. She was introduced to Malibu C at a hair show and recommended I try it. Best advice ever! I prepped with Malibu C Color Prepare before my color in November and my color is nearly perfect 3 months later. Love it!