June 6, 20130 found this helpful
Today I used NOXON 7 to remove hard water/soap scum deposits from high-end Grohe polished brass bathroom fixtures. Works like as charm!! We have extremely hard water with iron/sulphur content. The water softener has not eliminated the spots on shower fixtures. I tried everything advertised, along with home remedy solutions. NOXON 7 was the ONLY product to removes the spots, and leave the brass finish gleaming! Minimal effort, easy to use, affordable.