With this hand washer, it is almost certain that the children will always want to wash their hands, and it is even more economical to dispense, since there will be no unnecessary liquid soap dripping anywhere.
You can make foam from liquid soap by using a foamer or frother. Just pour the liquid soap into the bottle and dilute it with water.
For us, the ratio 1:3 or 1:4 works best, but since the quality and composition of liquid soaps can be different, it is worth starting with a slightly thinner mixture and then possibly thickening it as needed.
Before washing your hands, it is worth pressing the mold onto a dry palm, because the mold may slip with wet hands.