Water Spot & Multi-Purpose Cleaner (20 Ounces) Clean with The Power of Genuine Diamonds! Professional Cleaner/Hard Water Stain Remover. Made in The USA!

This is the ONLY cleaner that got hard water spots off of my exterior windows! Before I got my front yard sprinklers adjusted, that irrigation water was spraying all over my front windows. Nothing else worked to clean off the hard water - vinegar, Mr. Clean sponges....then I found Diamond Magic online recommended by a professional window cleaner. Make sure you follow the instructions exactly. I found it was best to remove my window, lay it flat, use cleaner as instructed, wipe off the initial residue, then I carried the window to my bathtub and gave it a final rinse. Again, this is serious stuff, so make sure you follow the directions on use.

I have used this on just about everything. It removes stains and makes things shine. Use only as directed

Have tried everything I could think of to get hard water stains off of my glass shower door. All required hard work and still didn't do the job. I have a waterproof shower scrubber. Put some of this on the scrub pad and went to work on the doors. I wish I had found this sooner. No harsh smell and truly got rid of the water stains. Alot of the product is not needed however I am getting a second bottle in case I can't find it online again. Seemed costly when I purchased it but worth every penny. I highly recommend this product.

did not work for my shower door … had very high expectations

Have used it awhile, it does a wonderful job