Desensin Toothpaste. DESENSIN toothpaste is specially formulated to address the problem of tooth sensitivity. Its special composition of potassium nitrate and sodium fluoride eliminates the painful sensation that cold, heat, brushing, acids, sweets, etc. .. occurring in the teeth. It is particularly active against caries by its high content of fluoride, which strengthens the tooth enamel. Made effective: The combination of potassium nitrate and fluoride is most effective for the treatment of dentinal hypersensitivity. Numerous studies have proven their ability to reduce sensory nerve activity. Presentation of Desensin Toothpaste: - Desensin toothpaste 125 ml.