Originally purchased the product for hard water stains on my boat windows. I have tried the chemical guys and vinegar and water without success. Decided to do a test on my shower door. My shower door is horrible w hard water. Sud factory did Amazing. Due to the severity of the hard water stains I did use a drill and scrub pad attachment. Highly recommend this product

This product is a 10/10.Removes water spots as advertised.No harsh odor.Haven’t witnessed any scratches or scuffs to me vehicle windows.Not sure of durability because I applied it 2 days ago but it does remove spots.The pictures are the same spot on my sun roof 3 minutes apart with some elbow grease.Took me roughly 30 minutes by hand to do my whole sun roof.

I've seen ads and posts for this product line for months before I thought to try it. I already had a water spot remover product, but it was more like a gel, and was a pain to apply. I was wanting to do more auto glass services, so I needed a good water spot remover. I thought to give this a try. I'm kicking myself for not having done it earlier! This product is amazing and well worth the price. Here's the cool part. There were a couple situations where I needed to get water spots or hard water dirt areas off of paint. I thought to try this on the paint. It worked great! Maybe this and the paint water spot product share the same chemistry. I own an auto detailing company in Oregon called Awesome Headlights (https://awesomeheadlights.com), and these products will be invaluable in getting tough work done quickly. Order the product and you'll thank me later.

Neighbors sprinkler had beat the **** out of my truck and I being a dummy left it sit for months. I tried several products including Chemical Guys Water spot remover (I like their products so no dig) but this stuff is the only one I’ve found to work.

It works…. But not anywhere near as easily as they show in the advertisements.The amount of force you need to apply to the window is almost everything I have.If you’re not pushing at least 80 lbs of pressure, it’s not going to work.Wish it was easier.

I’ve tried several cleaners, Magic Erasers, polishing compound and solvents to get rid of the water spots on my Acadia sunroofs, and none have worked. Sud Factory does work. I was unable to get a better picture, but the roof closer was treated, the rest what it looked like before treatment. It took a little elbow-grease but nothing excessive, and not much product.

I bought this thinking it was another gimmick but dang! My windows were so bad and this literally melts water spots! I’ve used buffing wheels on drills, top name brand stuff and none of them work as effortlessly as this. I did a frontier 4 dr in less than 2 hrs. I even ran over the bottle and it didn’t explode. I’ve sent this to my friends and family. I kept saying wow every time I finished a window lol. I can’t wait to do my Sierra and Camaro. Nothing like brand new looking glass!

I have tried everything to clean the hard water stains off of my shower doors. This is the first product I have used that works! It does take a little elbow grease, but I could have scrubbed all day before this product with zero results. Anyone with hard water should absolutely use this stuff!

I used a small foam pad on my drill with this spotless glass. It took a few minutes to cover the entire passenger window on my car, but when I wiped off the haze, the spots were all gone. I live in Florida and the prior owner of the car let it set where the lawn sprinklers hit the car. The passenger side was covered in water spots. This stuff cleaned the glass right up.

Used this on my truck windows and my shower. Worked as expected on both. Applied to a paper towel and worked the product in for about 30 seconds prior to wiping with a microfiber towel. Only complaint is it came with a cap and not a flip top to make distributing the product easier.