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How to Make Slime With Contact Solution

Our favorite slime recipe is made with contact lens solution. It’s the easiest we’ve tried and without borax. So you won’t have to worry about slime fails with this one! Be sure to read the full post and tips below on how to make slime with contact solution!

RELATED: Fluffy Slime Recipe

Contact Solution Slime Recipe

There are a number of different slime activators you can use to “transform” your glue mixture into slime. Contact lens solution is our favorite activator. You can also replace this for saline solution, but just make sure that that they contain boric acid and sodium borate.

Why is boric acid important for slime? 

Boric acid is made from borax and similarly liquid starch contains sodium tetraborate which is also made from borax. Typically all activators have some derivative of borax. However, we prefer using the contact lens solution as it’s easier to use and more widely available (liquid starch is not available in Canada and Borax is not available in the UK).

This Renu Fresh Contact Lens Solution is one of the recommended brands we suggest since it contains both boric acid and sodium borate.

Slime with contact solution

Watch the Video Tutorial

Ingredients for Contact Solution Slime

This easy 3 ingredient recipe is such a popular one! If you haven’t seen our Unicorn Slime made with it, head over to watch the video on how it’s done!

Only 3 ingredients are needed: 

  • 1 Bottle of Elmer’s Glue (6 oz) – we like to buy the gallon size and then measure out for savings – you can use 3/4 cup of glue if you have a larger bottle. If you want to get a similar effect to the photos in this post, you’ll need to buy Elmer’s glitter glue and review our Unicorn slime recipe.

We recommend Elmers as it has been tested and is quality glue. Substituting with other ingredients may result in the slime not working. 

  • Baking Soda  – 1/2 teaspoon
  • 1½ TBSP of Contact Lens SolutionRenu Fresh contains Boric Acid and Sodium Borate. Do not substitute for other brands. Check the label before buying to make sure it has the right ingredients.
  • 1/4 cup of water (optional)- While water is not needed it really helps the slime become more stretchy, so we do recommend adding up to 1/4 cup of water to the slime.
  • Extra glitter (optional)

Steps for How to Make Slime With Contact Solution

1. Get a bowl to mix your slime ingredients in.

2. Pour your entire 6 oz Elmer’s Glitter glue into the bowl (or 3/4 cup of glue from a larger bottle).

Bottle of Glitter Glue

3. Add your 1/2 teaspoon of baking soda and mix in thoroughly.

Also add up to 1/4 cup of water if you want a more stretchy slime.

Baking Soda add to Slime

5. Slowly add in your contact lens solution

Reminder: your contact lens solution should contain boric acid or your slime will not form.

Add it in slowly and mix if possible so that you can adjust and ensure you do not add too much.

We like to add in 1 tablespoon to start and then mix. Then slowly add in the rest.

Knead and mix thoroughly before adding more as you do not want to add too much or your slime will get too hard.

You may not need the full amount so take this step slowly.

How to Make Slime With Contact Solution

6.  Now mix until your slime forms and begins to harden.

Take it out and knead, knead, knead. You may be surprised how much you need to knead to really make the slime form. It will be very sticky at this point. Especially if you added water. Keep kneading and stretching the slime and it will become less sticky.

If it’s not the desirable consistency keep kneading. Only add a little more contact solution a teaspoon at a time to prevent the slime from becoming too hard.

If you still find it to still be too sticky, add a little bit of lotion or baby oil to your hands.

slime contact solution

You can print the full recipe off here: 

Contact Solution Slime
5 from 25 votes

How to Make Slime With Contact Solution

Ingredients

  • 1 Bottle of Elmer's Glue (6 oz or 3/4 cup of glue)
  • 1/2 teaspoon Baking Soda
  • TBSP of Contact Lens Solution
  • 1 TBSP Optional – Add 1/4 cup of water if you'd like a more stretchy slime. We do recommend doing this step.
  • Optional – Add in extra glitter if desired

Instructions 

  • Get a bowl to mix your slime ingredients in.
  • Pour your entire 6 oz Elmer’s Glitter glue into the bowl.
  • Add your baking soda and mix in thoroughly. Also add up to 1/4 cup of water here if you want a more stretchy slime.
  • Slowly add in your contact lens solution (reminder: your contact lens solution should contain boric acid or your slime will not form). Add it in slowly and mix if possible so that you can adjust and ensure you do not add too much. You may not need the full amount so take this step slowly. 
  • Now mix until your slime forms and begins to harden. Take it out and knead, knead, knead. You may be surprised how much you need to knead to really make the slime form. If it’s not the desirable consistency keep kneading. If you find it to still be too sticky, add a little bit of lotion or baby oil to your hands. 

Slime Safety & Precautions

Note: Making slime is a science experiment and safety precautions should still be made when creating slime. By making this slime, you agree to our site terms which you can read here.

  • Adults should handle any chemicals and products
  • Adults should make the slime
  • Always read and follow the labels of products used. If contact lens solution is accidentally ingested, seek medical attention immediately.
  • This project is not suitable for children under 4.
  • Slime should not be placed in the mouth. Always wash hands before and after playing with the slime.
  • If you notice any skin irritation, discontinue use immediately. If you have sensitive skin, wear gloves while making and playing with the slime.
  • Slime is a science experiment and should be made and played with in moderation. Do not allow children to make their own slime and do not play with slime for an extended period of time.

We hope this easy to follow recipe on how to make slime with contact solution has been helpful!

See more of our favorite slime recipes:

More Slime Recipes

Head over to our Unicorn Slime page to see how you can turn this into Unicorn Slime!

Unicorn Slime Recipe

Make Fluffy Slime which has a different texture and is fun to play with! See our Fluffy Slime Recipe.

Fluffy Slime

See how we turned these 4 slimes into Galaxy Slime! This one is really fun to mix!

Slime Galaxy Colors
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100 comments on “How to Make Slime With Contact Solution”

  1. About how much does this make? I have 8 children in my classroom and would like each of them to have some for sensory time. Should I make two different slimes using two bottles of glue? Thanks!

    1. One batch could be split easily in 2 or could make 3 but would be a very small amount. So with 8 I would suggest doing 4 batches. Hope that helps!

  2. How long does this stay good for for? If I made it for a class party and just had the children incorporate their add ins, would it be too dry to do that if I made in advance?

        1. The Best Ideas for Kids

          It will start to get hard. Keep in an air tight (air removed) container or bag and it should last at least a week. Usually longer!

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