I recently tried the Malibu C Hard Water Wellness Shampoo and Conditioner after reading the testimonials on the web site. I have blonde highlights that for years have gradually turned green beginning about three weeks after the coloring process. Recently, after the purifying treatment at the salon to remove the green discoloration, I began a daily regime of using your Malibu shampoo and conditioner, with a weekly application of the Hard Water treatment. My hairdresser could not get over the difference in my color when I returned in six weeks...had to know my secret....she was amazed at the color preservation...an absolutely marked improvement from the days before Malibu C. Thanks for giving me back shiny, manageable hair that retains its highlighted color!