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Chemical Guys

Chemical Guys, Heavy Duty Water Spot Remover Gel for Glass & Paint, 16 oz

  • Based on 12,803 reviews
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Style: Water Spot Remover


Size: 16 Fl Oz (Pack of 1)


Features

  • HEAVY DUTY WATER STAIN REMOVER FOR CARS(SPI10816) Trusted by detailers for years, this gel formula targets stubborn mineral stains and water spots on paint, glass, and metal surfaces
  • SAFE AND EFFECTIVE FORMULA This car water spot remover is designed to remove tough water marks without damaging clear coat, polished metal, or glass, making it safe for regular detailing use
  • VERSATILE SURFACE APPLICATION A hard water stain remover that works on painted panels, chrome trim, aluminum, stainless steel, and exterior glass for a complete water spot removal solution; a great addition to you car detailing kit
  • EASY TO USE GEL Thick formula of this Chemical Guys water spot remover clings to vertical surfaces for longer working time; simply apply, rub gently, and rinse or wipe away for a clean, spot-free finish
  • PREPARES SURFACES FOR PROTECTION Chemical Guys hard water spot remover removes grime and light debris that can block waxes or sealants from bonding properly, ensuring better protection and longer-lasting shine
  • BEYOND AUTOMOTIVE USES Ideal for boats, RVs, and household glass or metal surfaces; this hard water stain remover for glass safely removes mineral deposits and spots from a variety of finishes

Description

Hard water spots and mineral deposits are among the most stubborn challenges in detailing - left untreated, they etch into surfaces and become increasingly difficult to remove. Heavy Duty Water Spot Remover is a professional-grade gel engineered to dissolve calcium buildup, mineral staining, and water marks from paint, glass, chrome, and metal without scratching or damaging delicate finishes.The thick gel formula clings to vertical panels and glass for extended dwell time, giving the active ingredients time to break down deposits at the surface level. Apply a thin, even layer to a microfiber applicator pad, work into the affected area using light circular pressure, and allow 30-60 seconds of dwell time before wiping clean. For heavily etched or long-standing mineral buildup, two to three applications may be needed to fully lift deposits - this is normal for severe staining and not an indication of product failure.Safe on clear coat, polished metals, chrome trim, aluminum, stainless steel, and exterior glass. Works on cars, trucks, motorcycles, RVs, boats, and a wide range of hard surfaces wherever mineral deposits and water staining occur.After treatment, surfaces are clean, smooth, and properly prepped for waxes, sealants, or ceramic coatings. Mineral deposits left on paint can block protective products from bonding correctly - removing them first ensures better adhesion and longer-lasting protection. Follow up with Chemical Guys Butter Wet Wax or a ceramic spray coating for a complete finish.Questions about application or results? Our detailing specialists are available at .

Product Dimensions ‏ : ‎ 8.27 x 1.81 x 1.81 inches; 1.1 pounds


Item model number ‏ : ‎ SPI10816SW


Department ‏ : ‎ Adults


Date First Available ‏ : ‎ November 14, 2016


Manufacturer ‏ : ‎ Chemical Guys


Best Sellers Rank: #104 in Automotive (See Top 100 in Automotive) #4 in Cleaners


#4 in Cleaners:


Customer Reviews: 4.0 4.0 out of 5 stars (12,803)


Item Form: Gel


Scent: Unscented


Specific Uses For Product: Paintwork, Metal, Stainless Steel, Aluminum


Surface Recommendation: Glass, Metal


Special Features: Removes Water Spots


Special Ingredients: Acid


Cleaning Agent Formulation: Hard Surface Cleaner


Product Benefits: Removes Water Spots


Item Volume: 16 fluid ounces


Unit Count: 16 Fluid Ounces


Number of Items: 1


Item Weight: 499 g


Size: 16 Fl Oz (Pack of 1)


Brand Name: Chemical Guys


Global Trade Identification Number: 68, 69


Manufacturer: Chemical Guys


UPC: 816276011868


Item Highlight: Thick gel clings to glass and panels to tackle hard water stains and mineral marks, prepping for wax or ceramic


Included Components: Product


Item Type Name: Heavy Duty Water Spot Remover (16 oz)


Model Number: SPI10816SW


Part Number: SPI10816SW


Material Features: Unscented


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 18

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Really impressed with this product
Style: Water Spot Remover Size: 16 Fl Oz (Pack of 1)
Okay, it took me a good couple of tries to get this right, but we figured her out. Literally the same philosophy as bleaching hair. My car's windows have been sporting extremely baked-on water stains because I had neglected her for several years. I tried clay, vinegar, Windex, and a sponge (which, honestly, out of the three, kind of worked the best, weirdly), but the results were all varying levels of disappointment. I was drawn to this product because of its heavy-duty nature. It certainly smells dangerous. And it has the consistency of snot, which is... Moving on. The directions advise not to let the goop dry. This is hugely important. Don't waste your time and product in the sun or on a warm surface. Can confirm, the product does not work if dry (like with bleaching hair). It is permanently windy where I live, so "ideal conditions" for preventing drying are incredibly rare. Spent a lot of time and product trying to find the best way to prevent drying. My technique for combating drying was really making sure to thickly layer the dangerous-smelling snot on the glass. However, this may not be necessary on a dim, cool, still evening. I also slowly ramped up the amount of time I left the goop on the glass. Thirty seconds just did not do it for my very old and baked-on stains. To be honest, I wasn't terribly precise. I was kind of going by vibes. I would apply the goop, and it wasn't until the surface was entirely covered that I would start a mental clock. I probably left the treatment on for anywhere from 30 to 120 seconds. (Much like bleaching hair, it needs time to process, and the severity of the stains will ultimately determine how much time it takes to be effective. Further, the place you begin the application begins processing immediately. If your area is too large or if you take too much time to completely coat the area, the final result will be uneven.) I did not see any damage as a result of leaving the treatment on longer than 30 seconds, but I did not leave it on any longer than 2 minutes. I would still recommend proceeding with caution if you want to play around with the time here. Now, I was confused by the direction to "soak" the area. Maybe it's just me. I couldn't picture it. I elected to douse my entire car in water for several minutes after treating each section before wiping it all dry again. Time will tell if that was an effective method or if I damaged my paint. But guys, oh my god. I really should have taken before and after photos. I am kicking myself. I mean, I hoped it would work, but I did not expect it would work this well! My windows literally look brand new, it is amazing. I have a mid-sized, four-door sedan. Even with my liberal application and my test runs to figure it out, I only used about half of the bottle on the door windows and the back windshield. I'm pretty impressed with how far a 16 oz bottle is going. The power of snot. Would recommend. ... show more
Reviewed in the United States on July 24, 2026 by Em
    • This stuff really works! Either this or buff / polish.
Style: Water Spot Remover Size: 16 Fl Oz (Pack of 1)
Review Image by The Real Deal
Review Image by The Real Deal
Superb! This product is amazing on water stains. The water stains I had were from sprinklers. They were only there for 2 weeks but two car washes did not remove any of the water spots. I did not want to go through the hassle of polishing the whole car when only half of the car was sprayed. The front hood and bumper also has a clear bra and I wasn't sure how it would work on that. Some videos show a speed cleaner wash spray after but all you need is water to spray it down after. In in attempt to get the compound off as I went along I used about 5 microfiber cloths and a large water bottle for half of the car. To be extra careful and not leave any material on the car you can also wash it after. I decided to use their "speed wipe" that states it removes light contaminates. Next week I plan to wash it and wax it for extra protection. ... show more
Reviewed in the United States on August 29, 2026 by The Real Deal
    • A true miracle for my long time Tesla glass water spot issues.
Style: Water Spot Remover Size: 16 Fl Oz (Pack of 1)
This stuff is pretty amazing. I have a 2021 Tesla Model Y and the roof is pretty much all glass. Although I was with softened water, I still had some baked-in deposits that were not coming out with other methods. I followed the directions using microfiber rags, working out in with a back and forward motion and doing the work in my garage. I neutralized and polished with a quick detailer and presto! The stains were gone and the glass looked as good as new! No more water spots! The stuff is pricey, at $20 a bottle, but there are plenty of applications in the bottle, so I figure it really cost me $2 and some elbow grease to restore the glass. I'm very impressed. ... show more
Reviewed in the United States on September 6, 2026 by Jack B. Brown Jr.
    • Miracle in a bottle!
Style: Water Spot Remover Size: 16 Fl Oz (Pack of 1)
This stuff is a miracle in a bottle! I Have tried all manner of home remedies, many different types of cleaners, but I could not get rid of the hard water spots on my black Mustang. I tried this gel, in conjunction with their detail spray. The results were amazing! Took a little elbow grease but final product was worth it. No more spots, and very shiny! It didn't work as wall on my windows as I would have hoped, but overall I am extremely satisfied! ... show more
Reviewed in the United States on August 2, 2026 by Michael A. Dolan
    • Overall fair value.
Style: Water Spot Remover Size: 16 Fl Oz (Pack of 1)
This product has worked well for me, but I have not tried it my car. I use it to keep hard water stains off my glass shower doors. It seems at least for my purposes to be a good value since it's lasting a while. I only didn't give 5 stars because I'm not sure how well it works for it's intended purpose for use on cars. It makes my shower doors shine beautifully, I will buy it again. ... show more
Reviewed in the United States on May 1, 2026 by Adrienne Grace Riley
    • Determined to keep trying!!
Style: Water Spot Remover Size: 16 Fl Oz (Pack of 1)
I am on a mission to try to get my shower glass door crystal clear as when I first got it two years ago. I wipe down my shower doors each night and clean them each weekend but I have well water and that causes orange stains around any surface that has been in contact with water. It also causes hard water stains on glass, shower, and porcelain. So far, this product has not removed all the general light water stains on my shower doors. My shower doors are not yet crystal clear. I tried just wiping it in a circular motion with a microfiber cloth like the video and most of the water stains remain. I tried leaving the product on the glass longer and using a magic eraser in a circular motion to wipe the product off and the water stains are still there. The product has removed about 90% of the original stains. You can definitely still see the rings. I do love the thick product. The bottle size will last us awhile! It is not a spray but it’s highly concentrated and works well on my mirrors. I plan to use this weekly in my other new glass shower door and will update as needed. ... show more
Reviewed in the United States on July 23, 2026 by L. VANG
    • This stuff is actually magical!
Style: Water Spot Remover Size: 16 Fl Oz (Pack of 1)
I’ve fought hard water spots on my shower glass for a long time. Other products barely touched them. The only things that really worked were a pumice stone and a razor blade, and both take a lot of scraping and effort. I used it on my shower glass and it took off hard water spots with no effort. It actually dissolves the spots instead of making you grind them off. I applied it, worked it in a little, and they came off with almost no labor. The glass looked clear again. Shame I didn't take pictures before & after, I highly recommend this product! ... show more
Reviewed in the United States on September 8, 2026 by BK
    • IT WORKS
Style: Water Spot Remover Size: 16 Fl Oz (Pack of 1)
I wish i would have taken before an after pics. I've been driving around with my truck windows covered in tough water spots for months. I bought 2 other products that did absolutely nothing and no amount of car washes helped. Tried this rubbed it back and forth briefly then rinsed off and the water spots came off like magic. Its only been 2 days I'll update if it doesn't actually work long term but so far it fixed my problem and saved me hundreds of dollars I thought I was going to have to spend on getting it professionally detailed to get the spots off ... show more
Reviewed in the United States on September 6, 2026 by edgar lira

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