How To Make Non-Toxic Slime: A Step-By-Step Guide

Making slime is a fun DIY activity that allows you to customize textures, colors, scents, and more. However, many commercial slime recipes call for borax or liquid starch, ingredients that can irritate skin and eyes. Fortunately, you can make non-toxic slime at home with a few simple substitutions.

If you’re short on time, here’s a quick answer to your question: non-toxic slime can be made by substituting borax with contact lens solution and trading liquid starch for guar gum or xanthan gum. You’ll also want to avoid adding acrylic paint, which contains ammonia, and stick to kid-safe glitter.

In this comprehensive guide, we’ll walk through everything you need to know to create non-irritating slime recipes that are safe for kids and adults alike. We’ll cover slime ingredients to avoid, substitution options for common toxic add-ins, steps for making basic slime, and tips for customizing texture, scent, color, and more.

Ingredients to Avoid in Slime Recipes

When making non-toxic slime, it’s important to be aware of the ingredients you should avoid. While slime can be a fun and creative activity, using certain substances can pose potential health risks. Here are some ingredients you should steer clear of:


Borax, also known as sodium borate, is a common ingredient found in many slime recipes. While it can create a stretchy and gooey texture, it is important to note that borax can be harmful if ingested or exposed to the skin for prolonged periods. It is especially crucial to keep borax away from young children who may be more prone to putting things in their mouths. Instead of using borax, consider alternative slime activators such as liquid starch or contact lens solution, which are generally considered safer options.

Liquid Starch

Liquid starch is another popular ingredient used to make slime. While it is generally safe to use, it is important to read the labels and choose a brand that does not contain harsh chemicals or additives. Some liquid starch products may contain ingredients that can cause skin irritation or allergic reactions. Always opt for a trusted brand and follow the instructions provided to ensure a safe and enjoyable slime-making experience.

Acrylic Paint

Adding color to slime can make it more visually appealing, but it’s important to choose the right kind of paint. Acrylic paint is not recommended for slime as it can contain toxic chemicals and solvents. These chemicals can be harmful if they come into contact with the skin or if the slime is accidentally ingested. Instead, consider using food coloring or non-toxic washable paint to add color to your slime creations.

Poor Quality Glitter

Glitter is often used to add sparkle and excitement to slime, but not all glitter is created equal. Some low-quality glitters may contain heavy metals or other harmful substances that can pose risks if they come into contact with the skin or are ingested. To ensure the safety of your slime, opt for high-quality, non-toxic glitters that are specifically labeled as safe for craft projects. It’s always better to be safe than sorry when it comes to the materials you use in your slime recipes.

By being mindful of the ingredients you use in your slime recipes, you can create a fun and safe sensory experience for everyone involved. Remember to always read product labels, choose trusted brands, and prioritize the well-being of yourself and those around you.

Non-Toxic Slime Ingredients

When making slime, it’s important to use non-toxic ingredients to ensure the safety of those who will be playing with it. Here are some key non-toxic ingredients commonly used in slime-making:

Contact Lens Solution

One of the main ingredients in making slime is contact lens solution. This solution contains boric acid, which helps to create the slime’s texture. It’s important to choose a brand of contact lens solution that is specifically labeled as “saline” or “multi-purpose solution.” This ensures that it is safe for children and won’t cause any irritation.

Guar Gum or Xanthan Gum

Another alternative to traditional slime activators like borax or liquid starch is guar gum or xanthan gum. These natural food-thickeners can be found in most grocery stores and are safe to use in slime recipes. They work by creating a thickening effect, helping the slime to hold its shape and giving it a stretchy texture.

Washable Kid-Safe Glitter

Adding glitter to slime can make it even more fun and visually appealing. However, it’s important to choose glitter that is specifically labeled as “washable” and “kid-safe.” This ensures that it is non-toxic and can easily be washed off hands and surfaces. Always supervise children when using glitter to prevent any accidental ingestion.

Fragrance Oils

If you want to add a pleasant scent to your slime, you can use fragrance oils. However, it’s important to choose oils that are specifically labeled as safe for cosmetic use. Avoid using essential oils, as they can be too concentrated and may cause skin irritation. Fragrance oils come in a variety of scents, allowing you to customize your slime with delightful aromas.

Food Coloring

To give your slime vibrant colors, you can use food coloring. Make sure to choose food coloring that is labeled as safe for consumption. Gel-based food coloring often works best for slime-making as it provides more vibrant and long-lasting colors. Remember to start with a small amount of food coloring and add more as needed to achieve your desired color.

By using these non-toxic ingredients, you can create slime that is safe and enjoyable for everyone to play with. Always supervise children when making and playing with slime to ensure their safety. Now that we’ve covered the ingredients, let’s move on to the step-by-step guide on how to make non-toxic slime!

How to Make Basic Non-Toxic Slime

Slime has become a popular sensory toy for kids and adults alike. However, some store-bought slime can contain harmful chemicals. The good news is that you can easily make your own non-toxic slime at home! Here is a step-by-step guide to making basic non-toxic slime that is safe for everyone to enjoy.

Gather Materials

The first step in making non-toxic slime is to gather all the necessary materials. You will need:

  • 1 cup of clear or white school glue
  • 1 cup of liquid starch
  • Food coloring (optional)
  • Glitter (optional)
  • Mixing bowl
  • Spoon or spatula

Make sure to use non-toxic glue and liquid starch. You can find these materials at your local craft store or order them online.

Make the Slime Base

Once you have gathered all the materials, it’s time to make the slime base. Start by pouring the glue into the mixing bowl. If you want colored slime, add a few drops of food coloring and mix well. You can also add glitter for some extra sparkle.

Next, slowly add the liquid starch to the glue while stirring continuously. Keep stirring until the mixture starts to come together and pulls away from the sides of the bowl. You may not need to use the entire cup of liquid starch, so add it gradually until you reach the desired consistency.

Activate with Borax Substitute

Instead of using borax, which can be irritating to some people, we will use a borax substitute to activate the slime. One popular borax substitute is a mixture of water and baking soda. To make the substitute, mix 1 teaspoon of baking soda with 1 cup of warm water.

Slowly add the borax substitute to the slime base, a little at a time, mixing well after each addition. Keep adding until the slime reaches the desired consistency and is no longer sticky. You may not need to use the entire borax substitute mixture.

Knead and Play!

Once the slime is no longer sticky, take it out of the bowl and start kneading it with your hands. The more you knead, the smoother and stretchier the slime will become. If it’s too sticky, you can add a little more liquid starch or borax substitute and continue kneading.

Now that your non-toxic slime is ready, it’s time to have some fun! Stretch it, squish it, and enjoy the satisfying texture. Just make sure to store it in an airtight container when you’re not playing with it to keep it fresh.

Remember, making non-toxic slime is a great activity to do with kids, but adult supervision is recommended, especially when handling the borax substitute. Enjoy the process and let your creativity run wild!

Customizing Your Non-Toxic Slime

Now that you have mastered the art of making non-toxic slime, it’s time to take it to the next level and customize your slime to make it truly unique. Here are some fun ways to customize your slime:

Change Texture

If you want to change the texture of your slime, you can experiment with different ingredients. Adding cornstarch or baby oil can make your slime thicker and more stretchy. On the other hand, if you want a slimier slime, try adding more water or lotion. Don’t be afraid to get creative and find the perfect texture for your slime!

Add Color

One of the most exciting ways to customize your slime is by adding color. You can use food coloring or liquid watercolors to give your slime a vibrant hue. Start by adding a few drops and kneading the slime until the color is evenly distributed. Keep adding more drops until you achieve the desired color. Mix different colors together to create new shades and have a rainbow of slime!

Scent It

Add a delightful scent to your slime by incorporating essential oils or extracts. Lavender, peppermint, and lemon are popular choices. Just a few drops will do the trick! Not only will your slime look amazing, but it will also smell fantastic. Be careful not to add too much, as some scents can be overpowering.

Glitter It Up

For all the glitter lovers out there, this one’s for you! Adding glitter to your slime can take it to a whole new level of sparkle and fun. You can choose fine or chunky glitter, or even mix different types for a dazzling effect. Sprinkle a little or a lot – it’s up to you. Get ready to have the most glamorous slime in town!

Make Floam

If you want to add a bit of crunch to your slime, try making floam. Floam is a combination of slime and foam beads, creating a unique and satisfying texture. Simply mix in a handful of foam beads into your slime and knead until they are evenly distributed. The result? A crunchy, squishy, and oh-so-fun slime experience!

Create Butter Slime

Butter slime is a soft and stretchy variation of slime that is incredibly satisfying to play with. To make butter slime, you will need to add clay to your slime mixture. Start by adding a small amount of clay and knead it into the slime. Keep adding clay until you achieve the desired consistency. The result is a smooth, buttery slime that is perfect for stretching and molding.

Remember, the best part about making slime is that you can get creative and experiment with different customizations. There’s no right or wrong way to do it – it’s all about having fun and making something that reflects your own unique style. So go ahead, get messy, and let your imagination run wild with your customized non-toxic slime!


With this guide, you should have all the info you need to start whipping up fun, non-irritating slime recipes at home. The key is swapping out borax and liquid starch for kid-safe alternatives like contact solution and gums. Get creative with colors, scents, textures, and mix-ins to make unique slime concoctions. Just be sure to do a patch test before prolonged exposure, especially for younger kids or those with sensitive skin. Now grab your glue and coloring and get ready for ooey-gooey DIY fun – minus the red, itchy hands!

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