Soap scum, a gray or white film formed when hard water mixes with soap and other residues like dirt and body oil, often appears on shower doors, bathtubs, tiles, and faucets. Besides being unsightly, ...

Baking soda, vinegar, and dish soap can cut through the stubborn residue. If even after scrubbing your shower there’s a white residue lingering, it may be soap scum. While soap is meant for cleaning, ...

If even after scrubbing your shower there's a white residue lingering, it may be soap scum. While soap is meant for cleaning, it can leave a film behind that feels not so clean. This chalky residue ...