Shabondama Soap Bubble "Shabondama Children's Soap" has been released for children. The price is 356 yen (tax included) with 60g (2.12oz).
This product is a toothpaste that uses additive-free soap (soap base) instead of the synthetic surfactant that is generally used as a foaming agent. It doesn't foam too much, so it's easy to polish and gargle.
Also, in consideration of children's favorite taste, mandarin orange flavor (naturally derived flavor) is adopted without adding any mint. It is less irritating and the taste does not change even after brushing teeth.