Can you use baking powder in slime?

Slime has become one of the most popular DIY toys in recent years, loved by both kids and adults alike. This squishy, stretchy substance is made from a combination of ingredients that vary depending on the desired texture and end result. In this article, we will explore whether or not baking powder can be used in slime recipes, and how it might affect the texture of the final product.

What is baking powder?

Before we dive into using baking powder in slime, let’s first define what it is. Baking powder is a leavening agent commonly used in baking recipes to help doughs rise. It is typically made up of baking soda (sodium bicarbonate), cream of tartar (an acid), and sometimes cornstarch to prevent clumping. When combined with water or other liquids, baking powder releases carbon dioxide gas which makes baked goods fluffy and light.

What are the ingredients in slime?

There are many variations of slime recipes out there, but some common ingredients include:

  • Glue: usually clear or white school glue
  • Borax: a mineral salt that creates crosslinks between molecules to give slime its stretchiness
  • Cornstarch: helps thicken and stiffen the mixture
  • Saline Solution: contains sodium borate which acts as an activator for creating slime
  • Shaving Cream: adds a foamy texture and airiness to the mixture
  • Liquid Starch: similar to borax, it helps create crosslinks between molecules

Each ingredient plays a specific role in creating the desired texture of the slime.

Common Slime Ingredients

  1. Glue: This ingredient serves as the base for most slime recipes. The glue gives liquid consistency to your mixture.
  2. Borax: As mentioned earlier, borax acts as an activator when mixed with other ingredients such as glue or laundry detergent.
  3. Cornstarch: Cornstarch is used as a thickening agent and it’s often added if you desire to have thicker or smoother slime.
  4. Saline Solution: Saline solution contains sodium borate which acts as an activator for creating slime. If you cannot find borax, this is the best substitute.
  5. Shaving Cream: Shaving cream can help add airiness and fluffiness to your slime, especially when added in appropriate portions.
  6. Liquid Starch: This ingredient complements other activators such as borax in order to improve its effectiveness in achieving desired slimy textures.

How does baking powder influence slime texture?

Now that we know what baking powder and the basic ingredients of slime are, let’s see how they interact with each other.

While there is no hard and fast rule about using baking power in slime recipe, some people like to use it because it somewhat increases the standard stretchy consistency of these mixtures. Baking powder contains both acid (cream of tartar) and a base (baking soda), which means that adding it to a recipe could potentially create a chemical reaction that forms gas bubbles – allowing the mixture to expand and thicken.

Texture considerations

Depending on how much baking powder you add and what other ingredients you’re working with, there are several potential textures that could result:

  1. Dough-like Texture: A small amount of baking powder is likely to create a clumpy dough-like texture with little stretch or elasticity
  2. Fluffy texture: Adding more baking powder may lead to a fluffy texture similar to shaving cream-slimes, but equally thickened.
  3. Stretchy texture: In small amounts spread across several areas during production, some have reported baking powder helps achieve even more stretchiness than with complete absence from their recipes.

Can you use baking powder instead of borax, liquid starch, and other activators?

While it’s possible to create slime using baking powder as an activator instead of borax or liquid starch, we definitely don’t recommend it. Borax works by creating crosslinks between polymer molecules in the glue, which results in a stretchy and slimy texture. Liquid starch works similarly by creating crosslinked polymers that result in a more rubbery feel to the slime.

Baking powder simply doesn’t have the same properties and won’t produce the same desired outcome as these other activators. Furthermore, if you rely on baking powder to achieve slime, there’s a chance it could affect your baked goods later on – especially if you’re using the same container for both slime-making and baking.

Other Slime Activators

There are also several alternatives to borax and liquid starch when it comes to making slime:

  1. Borax: While this is one of the most common ways to activate slime, recent studies have suggested that it may not be safe for young children who may put their fingers in their mouth after handling it.
  2. Laundry Detergent: Another popular activator that some people prefer because they already have it at home; however, be careful when selecting brands as some contain harsh chemicals.
  3. Contact Lens Solution: Many contact lens solutions contain boric acid – which acts as an alternative activating agent without being too harsh on skin or eyes.

Is it safe to add baking powder to your slime recipe?

One of the biggest concerns with adding baking powder (or any other ingredient) in DIY recipes is safety. Children love playing with slime but can sometimes forget not to put things in their mouth or rub them on their eyes or face.

When used incorrectly or mixed with other substances improperly, inhaling large amounts of baking soda can pose a serious health risk for anyone – regardless of age – causing symptoms such as coughing, sneezing, and sore throat.

Always use baking powder with caution and make sure to store it somewhere safe to avoid any accidents.


While baking powder might create interesting textures in slime recipes due to its ability to release gas bubbles, it is not the most effective activator. Even when using borax amongst other activators such as liquid starch or contact lens solution, it is important to be cautious with the substances involved in creating slime, especially around young children or pets.

Ultimately, the choice of whether or not to add baking powder to your slime recipe is up to you – but we recommend sticking with tried-and-true activators like Borax and Laundry detergent for best results.


  1. Q: Can baking powder be used in place of borax or contact solution in slime making? A: No, baking powder cannot be used as a substitute for borax or contact solution in slime making because it doesn’t have the same binding properties necessary for creating a stretchy, moldable texture.
  2. Q: What does baking powder do to slime? A: Baking powder can react with other ingredients in slime recipes and cause them to clump together or become grainy, resulting in a less-than-ideal texture. Therefore, it’s not recommended to use baking powder in slime making.
  3. Q: Can adding baking powder make slime foamier? A: While baking powder can create a reaction with acids that produces bubbles (such as in baking), it doesn’t have the same effect on glue-based slime mixes since they aren’t acidic enough to create this reaction. Thus, adding it to your recipe won’t lead to an increase in foaminess or bubbles.
  4. Q: Are there any other household ingredients that can replace baking powder in slime making? A: There isn’t really any alternative ingredient that serves the same purpose as baking powder when it comes to making a sticky, malleable substance like slime. Other common recipes typically require either borax (which should only be used under adult supervision) or contact lens solution containing boric acid as the activator ingredient that binds everything together into slimy goodness!

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