Most slime recipes going around call for borax, not something you would happily put in a child's hands. This one contains none: baking soda, combined with contact lens solution, is what makes the texture set.

What you need

200 ml of liquid school glue, clear or white
1 tablespoon of baking soda
2 to 3 tablespoons of contact lens solution
A few drops of food colouring, optional
Glitter, optional

The method

1

Pour the glue into a mixing bowl.

2

Add the baking soda and stir until it has completely dissolved.

3

Add the food colouring and glitter if you are using them.

4

Stir in the contact lens solution one spoonful at a time. The mixture pulls away from the sides of the bowl and thickens.

5

Knead by hand for two or three minutes: it goes from sticky to stretchy.

If it is still sticky

Add the contact lens solution drop by drop, never more than a teaspoon at a time. Too much solution makes the slime brittle, and there is no going back.

Safety and storage

Only with an adult watching, and not for children who still put everything in their mouths. Kept in an airtight container, the slime lasts about a week.

The doses for our products are on their packaging, and that is what counts. If swallowed or splashed, call the Poison Centre on +32 70 245 245 and keep the packaging to hand.

The ingredients