what is the best shampoo to use in hard water?
['Malibu Hard Water Shampoo. ... ', 'Ion Shampoo For Hard Water (+ Conditioner) ... ', 'Kenra Clarifying Shampoo. ... ', 'Beautiful Nutrition Grapefruit Detox. ... ', 'Nioxin Clarifying Cleanser. ... ', 'Joico K Pak Clarifying Shampoo. ... ', 'Bumble and Bumble Sunday Shampoo. ... ', 'Ouidad Water Works Clarifying Shampoo.']