I am a dentist, and I would never recommend this to a patient. The ingredient list is scary because of the lack of information and poor choice of ingredients (namely EDTA, which he misspelled at ETDA). Two things on the ingredients list are misspelled actually. Instead of peppermint, he wrote pappermint. It doesn't list percentages like of the hydrogen peroxide, so it's hard to tell how much sensitivity it will cause. This is likely a homemade product by someone who knows nothing about the dental field.