From the first use, Malibu C Hard Water Wellness products have succeeded at removing the extreme hard water build up in my hair. Unfortunately, we live in an area where we have very hard iron water which over time discolors my hair (which is a natural blonde) making it very brassy, almost an orange-ish tint. Nothing at any of the local stores, hair salons, etc. has ever helped so I was so happy to finally find a product that truly helps. :) Thanks!