I have fine hair that easily becomes limp, greasy or frizzy. I didn't know that hard water could be a part of the problem, however, after trying Malibu C Hard Water Wellness Shampoo and Conditioner, I have noticed a big difference! My hair is fuller and I can go longer between shampooing's, and I don't have a problem with frizz. I'm also happy that the products are sulfate-free!