I have a water well so very hard water. I have noticed a brassy discoloration to my hair as my hair has become grey. My hair stylist recommended Malibu C's Hard Water Wellness Shampoo and Conditioner. Her coworkers in the salon were using it and were very pleased. I tried it and agree! The discoloration began fading after my first shampooing and has lessened more and more. My hair has a healthy sheen and I'm very pleased with the fact that these are natural products. Thank you for your great products!