In a bowl or other container, measure out two cups of baking soda and add 2 Tablespoons of salt. Mix throughly (little hands are very good at this). Add 1 tsp soap and mix it into the dough well. The dough should look crumbly. Next add 8 Tablespoons of water. (I added red watercolor for the pink affect). If your dough will form a ball, you're all set. If it's still too dry and crumbly add water 1 Tablespoon at a time until you have a dough that molds into a ball. It will not feel like playdough - it's more smooshy and crumbly than that. But it should form into and hold a ball.