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

I never believe anything advertisers say. So I was skeptical. Guess what? It actually works. I've tried everything on this one window. Only thing that worked was this product.

Bought this to take of a couple of years of water staining on basement windows. I wish I had taken pictures, because the windows had a heavy calcium deposit that nothing else could get off. This stuff worked like magic!!! I am nervous with any product on windows, I'm always worried about scratching. This cleaner did wonders! Being very careful to follow the instructions, we carefully did a few applications and was able to get 99% of the buildup cleaned off! We may try again later this summer and see if we can get that to 100%, but we are so happy with how it worked. There was no scratches or marks on the glass, just clear and clean! This product is not cheap, but if you have a difficult buildup and worry about your glass, THIS WORKS! And we used very little of the bottle and still have much left over for other applications. Bottom line, if you are particular about your windows, this is the product you want.

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.