Your main ingredient needs to be sand. Dry sand. If you get sand straight from the bag, it’ll naturally be damp. So to dry it out, put your measured amount onto a baking tray (doesn’t matter if it’s piled up) and put in the oven for a few hours at 100 degrees celsius. I stirred it every 30 mins or so with a whisk. This dried it out enough to work with to make the Kinetic Sand.
5 cups of dry sand
1.2 cups cornflour (1 cup, 3 tablespoons)
Equal parts Dishwashing Liquid and Water (I used 1/4 cup of each, but this may be too much so just add a little at a time and see how you go)
Put sand in a container / bowl. Add the cornflour and mix thoroughly, I used my hands. Next mix the dishwashing liquid and water together and add to the sand. Continue to mix until it gets to the require texture.
Kinetic sand has a cool wet feel to it. When I made mine, I probably put too much liquid in, so when I rubbed it together in my hands it was slightly greasy. So my recommendation would be to add the liquid a bit at a time, mixing as you go.
To make coloured sand, DO NOT ADD FOOD COLOURING. Instead, add 4 sticks of crushed chalk to the sand before adding the liquids.