- Diamond Luster Hard Water Stain Remover for Glass Shower Doors – Non Abrasive Shower Glass Cleaner for Hard Water Spots, Soap Scum & Calcium Buildup – Cleans Glass, Tile & Stainless Steel - 8oz Kit

Purchased this months ago and finally got to use it today. I would not bother writing a review on something I purchased months ago but after using this miracle product today I just have to write about it. Let’s just say I have shower doors on 2 of my 3 baths. They are at least 20 years old and one set is over 30 years old. I was ready to throw the towel in and replace the Manhattan shower doors on both baths at the cost of $2,500.00 but I figured let me try this stuff to resurrect them before I go new. Both baths still look brand new except for the eyesore shower doors. I spent about 3 hours today doing one set. Just apply it liberally to the applicator and use some force in a circular motion doing a one foot square area at a time. As you are doing the circular rubbing you will here a slight grinding continue for approximately 1 1/2 minutes per square till you feel the applicator get very smooth and buttery. Next buff the residue out with a soft cotton cloth to remove all residue. After completing each door put a coat of NuGlass on each door to keep it like new without having to do this ever again. I must say the doors look as new as the day they were installed. No water stains just clear see thru glass. The most amazing results I could have ever imagined. I also used it on the stainless steel and chrome fixtures and grab bars. Everything looks just like we had it remodeled. It looks like it never was used. Tomorrow I am going to hit up the other bath which is 10 years older but less used so I think I will have similar results. It’s the only product that I have tried that actually works. Don’t forget to wax them with NuGlass afterwards so you won’t have to most likely ever do this again. The NuGlass prevents future water spots from ruining all your hard work.

That stuff is freaking awesome. My shower doors were caked with calcium due to my bad well water. I used that product as described and it worked better than advertised. But here's a little trick, use it with a car wax buffer with a coarse foam pad and you'll save a ton of time on big flat surfaces. Seriously I want to send them more money.

No es tan fácil de usa como dice en la descripción, hay que poner fuerza en el tallado pero funciona en un 85%.

If this product worked like its name we would be happy. Yet, it did not remove any mineral stains on our shower door. I scrubbed with it twice. It was completely ineffective. It also arrived in a plastic bag, in a cracked bottle. I was very unimpressed with whoever packed it, and also with its ineffectiveness of doing what it claims to do.

I have been trying to clean my shower doors for years to no avail. We are on a well and have very hard water. The hard water spots on my doors seemed to have penetrated so deep they couldn’t be removed…. Until today! They look brand new! I was so surprised. I then ventured to do all of my kitchen appliances which look brand new as well. I wish I could have gotten a picture of my shower but did remember to take a before and after of the dishwasher. Very happy with the results!

This product worked fabulously and without the arm breaking scrubbing. It was like waxing a car. Use the provided scouring pad and product, rub on glass, use circular motions and continue until you get a squeeky clean sound. It does sound odd to describe listening to the sound the pad makes but there is a difference in tone when you have reached a point that the hard water stains and dirt are loosened. then just wait for the product to dry creating a film. Then simply use a micro cloth to wipe off. I wiped first with terry cloth towel to get the bulk off, then fine cleaned with micro fiber. There is a smell, but not harsh.

Worked some what.

I typically do not leave reviews but…. I have tried many products over the years and been disappointed. This product worked amazingly to remove years of hard water and soap scum on shower door with just a little effort. You can see in the before/after pictures how amazing this product worked. (Note - I only did top half of door when I took the pics.)