Neutralizing Dish Soap

Any dish soap or fairy liquid can be used in a dishwasher.

However, because dishwasher detergent does not produce suds to clean the dishes, soap residue may not completely rinse off when using fairy liquid or other dish soaps that are not intended for dishwashers.

While other soaps like fairy liquid and others produce suds that leave residue on the dishes that must be rinsed off a second time.

How To Neutralize Dish Soap?

Neutralizing Dish Soap

Adding some vinegar and salt to your dishwasher will help to neutralize soap suds. Dish soap should no longer work and the soap suds in the dishwasher should be neutralized by the vinegar and salt.

Pour one cup of vinegar and a few tablespoons of salt into your dishwasher to neutralize the soap suds. Run the dishwasher for a short while after that.

Cold water may be more effective at removing the soapy residue because it tends to produce fewer suds. Use white vinegar to scrub the floor if any residue is still present. The remaining soap film will be removed by the acid in the vinegar.

How Soap Cleans Surfaces and Dishes?

Molecules with two entirely different ends make up soap. The hydrophilic end of the soap molecules mixes easily with water. Water is repelled by the hydrophobic end of soap molecules, which is on the other end.

Together, these two incredibly dissimilar molecules reduce grease and oil into smaller drops that mix with water and can be removed from the surface of pots and pans, countertops, or other slick surfaces. While the hydrophilic end of the soap molecule binds to water, the hydrophobic end will stick to grease or oil.

The soap molecules hold the oil suspended in the water after it has been broken down into smaller drops. The surface of your items can easily be cleaned of these drops.

Which Substances Should Be Avoided In Dishwashing Detergents?

Don’t forget to check the cleaner for potentially harmful substances when selecting a pH-neutral cleaner.


They have been outlawed in numerous nations. These substances have a negative impact on the human body and wreak havoc on the environment.

Synthetic Flavors And Phthalates

They might result in endocrine problems.

Anaesthetic Surfactants

If this ingredient is present in the detergent, it will be very challenging to remove it.


Heavy allergies are caused by these elements.

Synthetic Preservation Substances

They are harmful because they cannot be excreted by the body and because they have a negative impact on the endocrine system.

Why Would You Want To Neutralize Dish Soap, And What Does That Mean?

Because liquid soaps frequently contain extra lye, the finished product may contain unreacted, leftover lye that can irritate the skin. Due to the lye’s alkaline/basic nature, unreacted lye soaps typically have a very high pH.

Having an overly alkaline soap is not a problem if you intend to use the liquid soap for household cleaning. In some instances, it might even be advantageous to you.

Highly acidic and alkaline products can both be effective cleaners. (Consider vinegar and baking soda, or more powerful drain cleaners with HCl or NaOH as bases). Naturally, you’d have to worry about it not eroding delicate surfaces if it were too highly alkaline.

On the other hand, any unreacted lye and excessive alkalinity could cause skin irritation if you plan to clean your face and body with your homemade liquid soap.

How To Neutralize A Liquid Soap?

Because the objective is not to bring the soap’s pH level into the neutral range, the term “neutralizing” a soap can be a little misleading. The soap would inevitably degrade if you did that.

There are a few techniques that can be used to help a highly alkaline soap’s pH decrease and move toward a more neutral range.

Using Citric Acid To Neutralize Liquid Soap

As a very general rule of thumb, 4 grams of citric acid should lower a kilogram’s worth of soap paste’s pH by about 5. Of course, the amount of water in your water paste will have a significant impact on all of this.

Citric acid is, well, acidic, so it’s very simple to add too much of it, particularly when working with small batches. It’s best to add it gradually and err on the side of caution. If you add too much, the soap will first start to look cloudy and then separate as a result of the excess.

Using Borax Or Boric Acid To Neutralize Liquid Soap

Borax or boric acid may be the most popular method used by liquid soap manufacturers in the US to neutralize their liquid soap because it is thought to be the simplest, despite the fact that many people are concerned about the safety of boron-containing substances and avoid using them.

Plus, if your liquid soap isn’t made with coconut oil or other solid oils, it has the added benefit of helping to thicken it. Borax is less likely to rapidly lower the pH because, when dissolved, it already has a pH that is within the ideal range for soap. Citric acid is much more acidic and is very easy to use excessively.

Related Questions

Does vinegar make soap useless?

Castile soap and vinegar don’t mix hazardously, just like vinegar and baking soda, but the result will be an oily, pricey waste of ingredients. Castile soap, which is a base, and vinegar, which is an acid, cancel each other out when combined to form unsaponified soap.

What must not be combined with baking soda?

Baking soda should also be used with caution when combined with acidic substances like vinegar or lemon juice. The chemicals form a gas as they combine with a satisfying fizz. It might explode and harm you if you combine them in a sealed container like a soda bottle.

Why Does Dish Soap Cut Grease?

Dish soap works quickly to remove dirt, grime, and grease from slippery, porous, or other typical surfaces, regardless of the size of what you are cleaning. Dish soap with grease-cutting properties surrounds, degrades, and suspends grease, oil, and grime in water, lifting and separating it so it can be quickly washed away.


Dish soap should be rendered inactive by the vinegar and salt. If the suds haven’t subsided after a few minutes of running the dishwasher, add more salt and vinegar and finish the cycle. After the bubbles are gone, grab a few more dry towels and completely dry the dishwasher.