I was so desperate when I moved to Chandler, Arizona which has the hardest possible water to get. My hair was greasy, and my blonde was turning brassy. I order Malibu C Hard Water Wellness Collection Kit and used it ASAP. My hair finally has gotten rid of the buildup and it removed some of the brassy tones even with my water being so hard! I love this stuff and as long as I'm living in Arizona or anywhere else with hard water, this is my go to!