You’re probably thinking, “My tap water is fine!” Is it though? Have you seen it dry on a black car? It looks like a crime scene investigation.
Hard water has calcium and magnesium. These minerals love to cling to your wax. They laugh at your chamois and leave spots anyway. A filter stops that nonsense cold.
Plus, it extends the life of your soap. Soap works better with soft water. It foams up like a cappuccino! You get more suds, less scrubbing, and a drier car.
