Shy nm is desensitizing toothpaste with two main constituents of hydroxyapatite, calcium and phosphorus to build a hydroxyapatite layer over the tooth surface.It works by creating a layer against dentin hypersensitivity and reduces recurrence of sensitivity and pain as compared to other products.It blocks the open dentinal tubules by providing long lasting relief.Helps to reduce the gingivitis and kills the microorganisms in the mouth.