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How to Make Slime With Contact Solution

The slime craze continues and so many people are having fun making slime! Not only is slime fun to make – but kids will love stretching and squishing it. You’ve probably heard of all the slime fails. Well you’ve come to the right place for an easy slime recipe. 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

How to Make Slime With Contact Solution

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

Ingredients for How to Make Slime With Contact Solution

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. 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. Do not substitute any ingredients as your slime may not work. 

2. Baking Soda  – 1/2 teaspoon

3.  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.

4. (Optional) – Add up to 1/4 cup of water if you’d like a more stretchy slime. While water is not needed it really helps the slime become more stretchy so we do recommend adding about 1/4 cup of water to the slime.

5. (Optional) – extra glitter

Safety Tips: Adults only should make the slime and handle all chemicals. Do not substitute any ingredients in our slime recipes. If you have sensitive skin, wear gloves while playing with the slime. Always wash hands before and after use.  If you notice any skin irritation discontinue use immediately. See the bottom of the post for more safety precautions.

Watch the slime video tutorial here before you get started!

 

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 21 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!

Other Slime Recipes to Try

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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Recipe Rating




89 comments on “How to Make Slime With Contact Solution”

  1. 5 stars
    This is a great recipe, and I’ve tried a bunch! I like your suggestion to start with a lesser amount of some ingredients and then add more if needed. Less was better for me.

  2. 5 stars
    Turned out perfect! Used almost a quarter cup water and only 1 tablespoon contact solution…will keep this recipe tucked away for the future!!

  3. Heather Woon

    We followed your recipe and even used less contact lens solution the second time (only 2 teaspoons) but after an hour in an airtight container we played with it and it just breaks apart. Any advice?

    1. The Best Ideas for Kids

      Are you using Elmer’s glue? If not it could be the temperature. If it’s too cold it might make the slime more stiff and prone to breaking. Also make sure you add in the 1/4 cup of water as that makes the slime more stretchy too.

      1. Heather Woon

        Yes, using elmer’s clear glue, baking soda, water, and contact solution according to recipe. We made it again, using 1.5 tsp contact sol’n and initially it was wonderful and stretchy, my daughter commented it was the nicest ever. However after leaving it for a few hours and overnight, it breaks apart when stretched. We don’t live in a cold area, so I don’t think temperature is an issue. Thanks for any suggestions!

        1. The Best Ideas for Kids

          Try with regular white glue next time and it should keep longer. I find the clear glue is not as good as the regular white glue (make sure it’s not the Glue All as that does not work well either). Store in a bag and press out all of the air. The more it gets exposed to air the faster it hardens and dries up. Hope that helps!

  4. 5 stars
    We used Amazon basics school glue and top choice (store brand) contact solution with boric acid, and added temepra paints for color. Worked great!

    1. The Best Ideas for Kids

      You can use another brand just be sure to check it has the ingredients listed we mention above in the post!

  5. 5 stars
    First timer here. Excellent recipe!  I used food coloring before the contact solution and regular glitter as the last step before kneading and it was great!!! 

  6. Does the contact solution have to have sodium borate or can it just have boric acid?

    1. The Best Ideas for Kids

      It’s better if it has both but it should still work if it only has boric acid.

  7. 5 stars
    Great easy recipe for slime! If u find that its sticking to ur kids hands but not ur hands(cause u r the one that has been kneading it), have them rub your hands and lightly touch the outside of the slime till it doesn’t stick to their hands either

  8. Great consistency, we added lotion at the end and it made it perfect. Even works with Elmer’s glitter glue that was 3 years old and half dried out. We used opti free puremoist for the contact lens solution and it was great.

  9. 5 stars
    Thanks for the tips. We made two batches of great slime. I was wondering though…a few days later with the slime being in a tub it went hard and broke apart. Is their anyway to salvage these? Thanks in advance.

  10. If I don’t want to use glitter glue can I use food coloring with Elmer’s regular white glue to get color?

    1. 5 stars
      By far the best slime recipe we tried. The eye solution is definetly the way to go. We even added beads for more texture and shine. Thanks a lot!!!

  11. Can I put homemade salin solution in slime. I was going to make saline solution it’s just a little salt boiled in some water I’m going to make this with preschoolers I would like it to be chemical free. 

    1. The Best Ideas for Kids

      No you cannot use homemade saline solution. If you are buying saline solution it needs to have boric acid in it for the slime to form.

    1. The Best Ideas for Kids

      This recipes makes enough for 1 batch which is 1 bottle but that can be easily split between two kids.

    1. The Best Ideas for Kids

      Add more water (just try a tablespoon at a time) and less contact solution. Add your contact solution in slowly and then knead as much as you can. Then only add in 1/2 teaspoon at a time until it’s not sticky but as stretchy as you’d like it to be.

  12. 5 stars
    Thank you so much for the tips on the contact lenses solution! We tried with one solution and the slime couldn’t form. Then I googled and came to your site where you specifically mentioned that the contact lenses solution must contain sodium borate and boric acid. We changed the solution and it worked! Thank you so much!

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