Place the water in a saucepan (do NOT turn on the element) and stir in the psyllium husk powder with a spoon.
Add a few drops of food colouring.
Turn on the element on medium heat. Heat the mixture, stirring constantly, until it starts to boil.
Let the mixture cook until it looks like it’s about to boil over, then immediately take it off the element. Let it cool for about 30 seconds to a minute, stirring occasionally, before putting it back on. Repeat this process 5-6 times, until the slime stops sticking to the surface of the pan.
Set the slime aside to cool. When it's done cooling, you can give it to your child to play with!