It only takes a few weeks to notice hard water leaving behind mineral deposits. A great hard water stain remover you can use at home is Amaz (uh-meyz).
Other methods might include squeegees, daily shower spray or complex home remedies like tartar sauce and vinegar.
Amaz is an all-purpose shower cleaner that works on glass, ceramics and metal. It removes mold, mildew, soap scum and calcium deposits, leaving a smooth and clear surface. Plus, it doesn’t contain bleaches or chlorides!
Amaz is a white putty that comes in a tub, and can be found at a hardware store or online. Use the coarse sponge that accompanies the product, scrubbing in circles then rinsing with water.