Soap scum on shower doors usually comes from hard water minerals, soap residue, body oil, and poor drying after daily shower use. USGS explains that calcium in hard water reacts with soap to form soap scum, which is why glass, tile, and metal surfaces can develop a cloudy or rough layer over time.
-
2026-07-17
-
2026-06-11Soap scum on shower doors comes from soap residue mixing with minerals in hard water. Once it dries on glass, handles, hinges, and lower tracks, the shower area can look old even when the bathroom is newly installed.