Shampoos with chelating agents such as Ion Hard Water Shampoo, Pantene or Garnier shampoos, Joico Kpak Clarify Chelating Shampoo or Aveda Shampure are effective in protecting hair from hard water. Chelating shampoos often include an ingredient known as EDTA.
Alternative hair treatments to remove build-up of calcium and magnesium in hair include using an apple cider vinegar, lemon or lime rinse after shampooing. The acidity in these everyday ingredients cut down scaly build-up and increase hair's shine. Using a small amount of leave-in conditioner, such as almond or Moroccan oil, also helps reverse negative effects of hard water and keeps hair looking healthy.