Brand from Japan: Shabondama Soap. Natural salt firms the gums and prevents gingivitis and periodontitis.It also prevents bad breath.By using additive-free soap instead of synthetic surfactants as foaming agents, the product is gentle to the mouth and does not impair the sense of taste after use.Does not foam too much, but allows for thorough brushing and whiter teeth.Can also be used on electric toothbrushes.Refreshing spearmint flavor derived from natural ingredients.Free of synthetic surfactants, fluoride, micro plastic beads, preservatives, and colorants.How to use:Take an appropriate amount and apply to toothpaste.