A lubricant blend, WD-40 is usually used to protect household items from rust and corrosion, but it can also be sprayed onto a glass shower door to remove hard water stains.

Spray the product onto the shower-door surface and remove it with a soft rag after about 15 minutes. This will clean soap scum or grime and stop stains from quickly returning.

WD-40 can also be used in other bathroom areas, such as the shower valve, shower tile grout, toilet bowl, and pipes clogged with hard water minerals.

While there are other products available, WD-40 may be the preferred choice, as it has no harsh scent, only a small amount needs to be used, and it’s quite affordable.