Denex-PF Gel is a medicated desensitising toothpaste that contains Potassium nitrate, Sodium monofluorophosphate in a pleasantly flavoured base. It protects against sensitivity, fights cavities and plaque, fights gum problems and strengthens tooth enamel. It is indicated in sensitivity due to attrition and abrasion (wear and tear of teeth), natural gum recession (lowering down of gums from their natural level) or post scaling recession, abrasion on the neck of the tooth, bad breath and teeth prone to decay. Potassium nitrate blocks the nerve that carries the message of pain to the brain due to sensitivity. This protects the tooth and prevents the feeling of pain when eating and drinking. Sodium monofluorophosphate protects tooth enamel from attack by bacteria that cause dental caries (cavities). Directions for use: Brush properly twice daily for two minutes with this toothpaste and don't rinse after brushing for at least 30 minutes as it needs some time to work. Brush at a 45 degree angle to your teeth by directing the bristles to where gums and teeth meet. Clean every surface of every tooth. The chewing surface, the cheek side, and the tongue side and use a soft brush with round bristles. By spitting thoroughly instead of rinsing your mouth with water after brushing, the thin coating of toothpaste remains on your teeth and provide the relief it is designed give you. Use under medical supervision.