How to Activate slime without activator

If your slime becomes tough, dry, sticky, or spinning, you can fix it by adding some activator substitutes like Borax commonly found in regular slime recipes. If you’re making your own slime and are worried about using Borax it might irritate your skin or be unsafe for young children, try this Borax-free slime recipe. These recipes use Borax alternative ingredients to activate slimes. You can try making cornstarch sponge slime or soft slime with baking soda and contact lens cleaner as an alternative to traditional slime with Borax activator.

Table of Contents

Ingredient

Styrofoam slime

½ cup (120ml) shampoo
¼ cup (30g) corn starch
6 tablespoons (90ml) water
Food coloring (optional)

Flexible slime

1 cup (240ml) milk glue
1 tablespoon (15g) baking soda
Food coloring (optional)
Contact lens cleaning solution

Fix existing slimes

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Add lotion to the tough slime to give it some flexibility. Put some moisturizer on slime that has lost its elasticity. Use your hands to knead the cream into the slime. You can add a little cream at a time until the slime has the desired consistency. ^{[1] X Research Source}

Any hand cream or body lotion can be used in this method.
This is an effective solution for slime that has become tough and broken when stretched.

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Moisten dried slime with warm water. Hold the dried slime under warm running water or dip the slime in a bowl of warm water for about 1 second at a time, then knead it with your hands to allow the water to penetrate the slime. Repeat this until you find the slime moist and pliable. ^{[2] X Research Source}

This method works for slimes that are slightly dry because they are not stored in a sealed container.

Make fluffy slime with corn starch

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Stir in ½ cup (120ml) of shampoo and ¼ cup (30g) of cornstarch. Pour ½ cup of shampoo into a bowl and add ½ cup of cornstarch. Use a metal spoon to stir the ingredients.

You can use any shampoo, but a thicker shampoo is usually better. ^{[5] X Research Sources}

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Add 3 drops of food coloring if you want the slime to be colored. Add 3 drops of food coloring to the mixture. Stir well to color the slime. ^{[6] X Research Sources}

This is an optional step. You don’t need to add food coloring if you don’t want colored slimes.

Tip : Green is the basic slime color, but you can create any color for the slime. Add more than 3 drops of color if you want the slime to have a more pronounced color.

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Stir in 6 tbsp (90ml) of water, 1 tbsp at a time. Add 1 tablespoon (15ml) of water to the mixture and stir well. Add the remaining 5 tablespoons (75ml) of water in turn, stirring well after each addition of 1 tablespoon of water. ^{[7] X Research Sources}

This creates slime with a spongy, powdery texture.

Make flexible slime with baking soda

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Stir 1 cup (240ml) of colloidal milk with 1 tablespoon (15g) of baking soda. Pour 1 cup of colloidal milk into the bowl, then add 1 tablespoon of baking soda and use a metal spoon to stir the mixture. ^{[10] X Research Source}

This recipe creates slime with a similar texture to the slime made from Borax. However, slimes will have a little grain like sand.

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Add 3 drops of food coloring if you want to create colored slimes. You just need to add 3 drops of food coloring of your choice. Stir well to color the slime. ^{[11] X Research Source}

You can increase or decrease the food color to make slime as dark or light as you like. Skip the step of adding food coloring if you want to create white slimes.

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Add 1 tablespoon (15ml) of contact lens cleaner and stir well. All you need to do is add 1 tablespoon of contact lens cleaner, stir well, and watch the slime change in texture. ^{[12] X Research Source}

Contact lens cleaning solution combined with baking soda will become the activator instead of Borax.
Contact lens cleaning solution is also known as physiological saline.

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Continue stirring in the contact lens cleaner until the slime has the desired texture. Add 1 tablespoon (15ml) of contact lens cleaner at a time and stir well. Stop adding solution when the slime has a doughy texture. ^{[13] X Research Source}

You need to knead the slime by hand after each time you add contact lens cleaner when the slime is hard.
If the slime is still too sticky, you can add a few drops of baby oil to the mixture.

Tips : Flexible slime will harden after many times of kneading. If the slime seems soft, simply knead and play with the slime until it has the desired texture.

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Store slime in a resealable box or bag for longer shelf life. Place the flexible slime in a container with a tight-fitting lid or a zippered plastic bag. Close the lid of the box or close the mouth of the bag so that the slime can be used longer. ^{[14] X Research Source}

If you store your slimes this way every time you finish playing, the slimes will keep for a few weeks or months. You can always add activator when the slime starts to dry out or lose its pliability.

Things you need

Bowl
Metal spoon
Zippered plastic bags or boxes with tight-fitting lids