I have naturally level 10 blonde hair and six years ago I moved into my dream home but noticed after awhile my hair started to have funky gold and brassy tones. It was heavy and weighed down. A fellow student at cosmetology school said that it was because we have well water and that I should try Malibu C. It worked! I now keep a liter size bottle of Malibu C Hard Water Wellness Shampoo and Conditioner at home and make my entire family use it. I also get the Hard Water Natural Wellness Treatment packets and we all use them at least once a month. Thank you for great products.