Expertpickhub Car care Best Car Wash Soap for Foam Cannon

Best Car Wash Soap for Foam Cannon

Do you find cleaning your car a dull chore? Good news! There is a life-saver combo for you – a pressure washer + a foam cannon + the best foam cannon soap. This combination can help you cleanse your auto in no time! All you have to do is to connect the cannon to the washer, fill the bottle with the appropriate soap, and position the spray. As they say, work smart, not hard!

Our pick
Chemical Guys Honeydew Snow Foam
Chemical Guys Honeydew Snow Foam
Best foam cannon car wash
Washing your car should not only be fun, but it should make you feel good!
Read the full review

In this review, we’ll talk about car foam soap. Obviously, the soaps differ from manufacturer to manufacturer, and it’s quite a challenging task to find a solution that will meet all your needs. So, arming yourself with some knowledge beforehand can save time and headaches. Here, you’ll find a list of the top-rated products and an in-depth buyer’s guide. So, just keep reading to make the right choice and avoid wasting your money!

How I picked and tested foam cannon soap

I evaluated the product details, online reviews, and customer feedback when compiling this list of the top car wash foams. Then I decided to devote a few days to meticulous testing of the selected solutions myself!

With each soap, I did the following:

  • Rinsed my auto
  • Added 1.5 oz of the soap to a 1l-bottle
  • Applied the solution to the car
  • Left it for 5 min
  • Rinsed the car
  • Wrote data in the table
  • Compared the results

I used each soap for a dark-colored vehicle to see the results clearly and mostly did the side panels to check how well the foam sticks. Then, when it was time to choose the winner, I paid close attention to the soap’s overall effectiveness (how well it restores the surface appearance), the convenience of use, and the price-quality ratio. See my champions below!

how i picked and tested foam cannon soap

Best foam cannon car wash reviews

Chemical Guys Honeydew Snow Foam – best overall

Chemical Guys Honeydew Snow Foam

Chemical Guys Honeydew Snow Foam is a high-performance solution – the chemistry holds the key to its success.

As you know, improper cleaning results in swirl marks and scratches that significantly degrade the car’s paint. Honeydew Snow Foam’s chemists formulated premium-quality components – super polymers and hyper-surfactants – that effectively release grime and dust just by letting them be flushed away for a no-scratch wash.

Chemical Guys Honeydew Snow Foam photo

This innovative soap delivers dense, grime-fighting suds that assist in cleaning any vehicle. It significantly improves the car’s surface appearance, leaving the paintwork glossy and smooth with zero scratches and swirls. The solution is actually harmless and gentle on all outer parts, including coatings, polished metal, plastic, and mirrors.

It’s also pH-balanced, so it won’t impair wax or sealant, which may already be on your auto. Moreover, Honeydew Snow Foam has a fantastic candy fragrance – enjoy it while washing your car!

Chemical Guys Honeydew Snow Foam is the overall best soap for foam cannon. It’s highly versatile (you can also use it for a foam gun or even a bucket & wash mitt), effective and safe on the car’s protective layer. So, if you want to get that luxurious, “new-car feel,” then this product is exactly what you need!

Key specs

  • Size, gal/oz: 1/128.


  • American-made.
  • pH-neutral and soft.
  • Straightforward to use.
  • Generates dense suds.
  • Offers good lubrication.


  • Smells like heaven.
  • Brittle bottle.
  • Not exactly a downside but the unique scent quickly vanishes.

Adam’s Polishes Ultra Foam Shampoo – also a great choice

Adam's Polishes Ultra Foam Shampoo

Adam’s Ultra Foam Shampoo is a highly concentrated car wash soap that produces the most suds when used with a foam cannon or gun, although it also performs well with a bucket and mitts. Due to superior, cutting-edge polymer-based chemical technology, the product offers maximum foam and ultimate lubrication – it generates a protective layer, minimizes scratches, and provides an unrivaled shine.

Adam’s Shampoo is mild and suitable for all surfaces, and it won’t peel wax or coatings while cleaning thoroughly. Furthermore, this solution, which neutralizes any potentially harmful minerals in your tap water, can be used to wash your car in direct sunlight.

Adam's Polishes Ultra Foam Shampoo picture

And last but not least, the soap was invented in the USA, and it’s backed by a 100% lifetime warranty from the manufacturer.

Adam’s Polishes Ultra Foam Shampoo is a gentle and efficient foam cannon car wash that removes any pollutants while leaving wax and sealants intact. pH-balanced and ultra-concentrated, the soap delivers terrific results! You’ll love the way your car looks and feels after using this solution!

Key specs

  • Size, gal/oz: 1/128.


  • Removes all types of contaminants.
  • Delivers thick, clinging suds.
  • Gentle on car components.
  • Rinses off well.
  • Smells well.


  • You might use too much soap if you utilize the maximum setting on your foam cannon.
  • Pricey.

Chemical Guys Mr. Pink – budget

Chemical Guys Mr. Pink

Products made by the Chemical Guys brand appear twice on my list for a good reason: they both are of high quality.

You won’t have to scour obstinate dirt and grease anymore with Mr. Pink – pH-balanced, no-scratch, coating-protective car washing shampoo.

You can use it for bucket washes, foam cannons, and foam guns – this soap is highly versatile and offers excellent results however you use it. The solution rinses off clean and leaves no residue; it won’t fade or discolor in the sun and delivers a lustrous shine. In addition, its advanced foaming technology makes enough suds power for total surface cleanliness every time, whether you’re working on weekly maintenance or an intense cleaning spree.

Chemical Guys Mr. Pink photo

Finally, the shampoo comes in various quantities, including 4 oz, 16 oz, 64 oz, and one gallon, so you can find the right size for you.

If you need the best budget car wash soap for foam cannon, do take a closer look at Chemical Guys Mr. Pink! It effectively removes grime, build-up, and dirt to leave your car looking flawless for a very reasonable price! Actually, you cannot ever go wrong with Chemical Guys!

Key specs

  • Size, gal/oz: 0.5/64.


  • Wax-free – safely releases dirt.
  • Leaves your regular wax job in place.
  • Rinses off easily.
  • It’s fun and easy to wash a car with it.
  • Reasonable price.


  • The odor might be too intensive for some users.

Meguiar’s G7101FFP

Meguiar's G7101FFP

Meguiar’s Hyper-Wash Foaming Car Wash is the right choice if you want to buy an environmentally-friendly car soap that can be used at home or in a garage.

Cleaning power, lubricity, foam, and water softening chemicals are all present in the composition, allowing filth and grime to be removed rapidly. Furthermore, it has a 5:1 dilution rate when used with a foam cannon, making it a cost-effective option that lasts much longer and does not compromise your paintwork’s wax gloss.

Meguiar's G7101FFP picture

The G7101FFP also delivers a pretty lush foam that wipes away impurities and leaves a rich, glossy finish. In addition, it can be used in direct sunshine, unlike some other solutions.

Meguiar’s G7101FFP is an excellent eco-friendly product – it does everything you expect from a car wash foam in this price segment. Moreover, many of my friends who are vehicle enthusiasts vouch for the G7101FFP’s quality. So, I’m sure you won’t regret the purchase!

Key specs

  • Size, gal/oz: 1/128.


  • Biodegradable formula.
  • Safe on all paint types.
  • Includes ultra-rich conditioners – leaves an excellent shine.
  • Preserves wax coating.
  • Leaves no residues.


  • Bubbles don’t last long.
  • You might need more solutions than it’s instructed.



Here’s another excellent snow foam soap created with nature-lovers in mind. This biodegradable composition is meant to absorb dirt on your car’s surface and gently rinse it away, leaving a superb shine gloss. While the solution is harsh on the road dirt, it’s still mild and soft on your auto’s paintwork – eco-friendly formula makes the foam harmless.

Sun Joe SPX-FCS1G-CRM other view

Even though SPX-FCS1G-CRM is not as concentrated as additive-based products, it nevertheless produces excellent results. It has, for example, assisted me in breaking down the 1-year accumulation of filth within the joints. You may also use this soap to clean your walkways, driveway, and workshop off filth, grease, and mold without damaging your surrounding plants – they will look the same (that’s from my personal experience!).

If you are looking for an eco-friendly, versatile, affordable wash foam, Sun Joe SPX-FCS1G-CRM may be the right choice for you! Of course, it’s not the greatest solution in existence, but it’s extremely safe and gets the job done much better than a local car wash or pep boys washing supplies.

Key specs

  • Size, gal/oz: 1/128.


  • Safe and effective.
  • Gentle on paintwork.
  • Suds up nicely.
  • Great smell.
  • Saves your time and energy.


  • Not as effective as soaps made with chemicals.
  • Not concentrated; therefore, you’ll go through a gallon of soap significantly faster.

Chemical Guys Citrus Wash & Gloss

Chemical Guys Citrus Wash & Gloss

Meet Chemical Guys Citrus Wash & Gloss soap for foam cannon, a citrus-scented super-concentrated shampoo and gloss enhancer that will make your vehicle look new. The smell of this soap is fantastic – fresh and lasts long. You can get this formula in any suitable size – 16 oz, 64 oz, or 128 oz.

This product will make cleaning your car much easier. It generates thick suds that dissolve dirt, grime, and filth without damaging the surface. In addition, you will discover that this shampoo helps reduce swirl marks and scratches.

Chemical Guys Citrus Wash & Gloss photo

Moreover, compared to Chemical Guys Honeydew Snow Foam generating copious amounts of cleaning suds, this product will bring out a vibrant shine to any paint color. Its special gloss-enhancing formula coats the surface to give your paint a fresher look.

Let me stress that this is the only Chemical Guys’ formula that is not pH-balanced, so it may leave an acid surface. The Citrus Wash & Gloss shampoo cleans great, but do not let it dry on the paint. Instead, rinse the surface right after you finish washing, especially when it’s warm and sunny outside.

I can confidently say that this is one of the best foaming car washes on the market today. Not only will it help keep your car clean, but it will also restore the bright colors of your car’s paint after every wash.

Key specs

  • Size, gal/oz: 1/128.


  • The smell is pleasant and long-lasting.
  • Comes in different sizes to meet your needs.
  • Generates thick suds that dissolve dirt without scratching.
  • Restores the brightness of the car’s paint.


  • It is not pH-balanced.
  • Should be immediately rinsed off after washing.

Foam cannon car wash buying guide

Soap designed for foam guns

Foam cannons work best when used with a soap designed explicitly for foam guns. This type of soap is formulated to create a thick, clinging foam that can be easily rinsed away. Unfortunately, standard car wash soaps are not always effective in a foam cannon, so it is essential to use a specifically made soap for this purpose.

There are many different brands and formulations of car soap for foam cannon, so it is important to do some research before purchasing one. Some of the more popular brands include Chemical Guys, Adam’s Polishes, Meguiar’s, and Sun Joe. These soaps effectively create a thick foam, safe for use on all types of vehicles, and some of them are also biodegradable.

When using a foam cannon, following the manufacturer’s instructions is important. Be sure to use the correct ratio of soap to water and test the foam on a hidden area of the vehicle before beginning the entire wash. If the foam is too strong, it can damage the paint or strip the wax. But if it is used correctly, a foam cannon can be a great way to clean your car.

Cleaning and foaming ability

When looking for a car wash soap to use in your foam cannon, it’s essential to consider its cleaning and foaming ability. Some soaps are better at removing dirt and grime from your car’s surface, while others produce more foam.

Choosing a soap that excels in both areas is the way to go, but if you have to choose one, opt for a soap that cleans well. For example, a good foaming car wash soap will still clean your car’s surface, even if it doesn’t produce much foam.

By the way, a higher price doesn’t mean that the solution works better. The price tag mostly depends on the size of the bottle. Note that buying a smaller container is an excellent method to assess if the soap fits your expectations, and you don’t have to spend a lot of money to find out whether it’s good for you.

Balanced pH formula

You may remember learning about pH in high school science lessons. Simply put, pH is a measurement used by scientists to determine how acidic or alkaline a substance is.

A pH of 0 is completely acidic, whereas a pH of 14 is completely alkaline. The pH-neutral number 7 is the sweet spot for car soaps. That means it won’t affect your car’s protective layer, such as wax or sealer. It also won’t affect your auto’s other components, e.g., a plastic trim. pH neutral solutions are made to keep your paint from peeling or fading.

Although most foam soaps for cars are pH-neutral, it’s a good idea to double-check the specifications before buying.


What kind of soap can I use in a foam cannon?

When it comes to soap, there are a few different types you can use in a foam cannon. The most popular type of soap to use is dish soap. This is because it is affordable and easy to find. However, you can also use shampoo or car wash soap in a foam cannon. Just be sure to avoid using any kind of soap that is designed to be used on the body, such as soap meant for handwashing. These soaps are typically too harsh and could damage the paint on your car.

Can you use any soap in a foam gun?

No, you should not use any soap in a foam gun. Soap is designed to be used in a variety of ways, but it is not meant to be used in a foam gun. The chemicals in the soap can react with the chemicals in the foam gun and create a hazardous situation. It is best to only use soap that is specifically designed for use in a foam cannon.

Can I use dish soap in a foam cannon?

Yes, you can use dish soap in a foam cannon. This is because dish soap is designed to be used in high-pressure situations, such as when cleaning dishes in a dishwasher.

Do foam cannons clean better?

Foam cannons offer a deep clean because the foam can penetrate into hard-to-reach areas and remove dirt, grime, and other build-ups. Foam cannon cleaning is also more efficient because it uses less water than traditional methods like hosing down your car.

Can I use wash and wax in a foam cannon?

Yes, you can use wash and wax in a foam cannon. In fact, using wash and wax in a foam cannon is one of the best ways to get your car clean and shiny. The foam will help the wash and wax to penetrate into all of the nooks and crannies on your car, and it will leave your car looking amazing.

How do I get more foam from my foam cannon?

If you want more foam from your foam cannon, you can try adding a little bit of dish soap to the mix. This will help to create more suds and will make your car look even cleaner. Be sure to rinse your car thoroughly after using the foam cannon so that the soap doesn’t cause any damage.

Can I put a degreaser in a foam cannon?

Yes, you can put a degreaser in a foam cannon. This can be helpful if you have a particularly dirty car. The degreaser will help to break down the dirt and grime on your car so that it can be easily washed away. Be sure to rinse your car thoroughly after using the foam cannon so that the degreaser doesn’t cause any damage.

How much soap do I put in my foam cannon?

How much soap you put in your foam cannon will depend on the type of soap that you are using. Some soaps are more concentrated than others, so you may need to use more or less depending on the brand. Be sure to read the instructions on the bottle before adding any soap to your foam cannon.
Related articles

If you click a link on this page and make a purchase, we may receive a small commission at no extra cost to you.

About Wayne Clark
Want to read more like this?