When the water dries, the minerals remain, leaving a chalky residue behind.
The stains can also become permanent if they are left too long.
Removing hard water buildup can be a chore if you dont use the right cleanser and technique.

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If so, add vinegar, lemon juice, and baking soda to your shopping list.
Sara McDaniel, a Louisiana-based designer and home renovation expert, gives us her go-to cleaning solution.
Sara McDanielis the Minden, Louisiana-based designer and home renovation expert behindSimply Southern Cottage.

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If the solution doesn’t harm the surface, proceed with cleaning the remaining surface.
The same goes for wearing gloves to protect your hands, especially if youve got sensitive skin.
If using a commercial cleanser, be sure to follow all instructions.
If you are not feeling well after mixing cleaners, contact Poison Control online atpoison.orgor by calling 800-222-1222.
When in doubt, always do a spot test in a hidden area first.
We spoke to a CLR Brands representative to get some advice on how to properly use the product.
Calcium, Lime, & Rust Remover is my go-to for cleaning hard water stains, says McDaniel.
It works like a charm on glass showers and even vintage tile.
Calcium, Lime, & Rust Remover was our go-to to make the tiles look like new."
Step 3: Scrub Stains
Scrub with a brush or sponge to hastenstain removal.
Step 4: Rinse
Rinse with clean water.
Step 5: Repeat
Repeat as necessary until the stains are removed.
Theacid in vinegarmakes it too harsh for certain surfaces.
In particular, youll want to keep it off stone surfaces and any metal that might tarnish.
Test it in an inconspicuous area first.
To use, dampen the sponge and use it to scrub built-up soap scum on shower doors.