We use a natural mineral potassium nitrate proven to block the transmission of pain signals from the surface of the affected teeth allowing for brushing comfortably. Medicinal Ingredients: Potassium Nitrate 5%, Xylitol 20%. Non-Medicinal Ingredients: Aloe Barbadensis (Aloe Vera) Leaf Juice, Calcium Carbonate, Sorbitol, Glycerin, Mentha Piperita (Peppermint) Essential Oil, Hydrated Silica, Malaleuca Alternifolia (Tea Tree) Oil, Menthil, Coco-Glucoside, Xanthan Gum, Citrus Grandis (Grapefruit) Seed Extract. ENG: Brush teeth thoroughly, preferably after each meal, or at least twice a day, or as directed by a health care practitioner. Safe to swallow. FR: Brosser les dents à fond, de préférence après chaque repas, ou au moins deux fois par jour, ou tel que prescrit par un praticien en matière de soins de santé. Peut être avalé.