How do I clean hard water stains off a shower door?

I use this all over the bathroom. Works great on glass shower door.

Heat up 1 cup of white vinegar, mix in about 1/4 cup of Dawn Premium. Not the dollar store kind, because it is too thin. When mixed, pour into a spray bottle and fill with water. Shake. Spray down the grout and let it sit overnight. In the morning rinse. If you have stubborn stains, spray again. Use this mixture a few times a week. It will keep your grout and tiles clean. Also works wonders in the toilet bowl to keep hard water stains at bay. Oh you only have to heat the vinegar one time when you add the Dawn.

Judy: Tilex works well for me. Put on gloves and soak a rag in it... hold on the spots for a while to let Tilex work. Once clean --- ALWAYS use squeegee to keep clean -- no excuses.

Mr Clean Magic Erasers work great on soap scum and all you have to do is wet them no chemicals involved

Vinegar and lemon juice are very effective cleaners and will loosen and remove hard water deposits from hard surfaces like tile and glass shower enclosures.

1. Spray or wipe the area with a 50/50 vinegar or lemon juice solution
2. Let the cleaning solution work on the stain for 15 minutes.
3. Use a soft bristle brush or green scrubby to scrub away any stain that remains.
4. Rinse thoroughly.

Lime-a-way is a product that removes hard water deposits and rust stains from tubs, showers, toilets, and glass and ceramic tiles. The product called CLR stands for Calcium, Lime and Rust.

These cleaning products contain proprietary blends of multiple heavy duty acids and are available in small quantities to be used in very small areas.

These hard water cleaning products are usually wiped on and then wiped off. Do not use a scrub brush to avoid spattering the cleaner.