Why do teeth become sensitive? When gums recede, the normally protected area of the teeth, the dental neck, becomes exposed and more vulnerable. In this case, stimuli such as cold/heat, acid, or contact can cause pain. Additionally, dental caries can develop more quickly. Strengthens and protects for 24-hour protection of sensitive teeth**, prevention of cavities, and strengthening of enamel. How can elmex Sensitive’s Neo-Aminex™ technology help you? Protects: Clinically proven formula to offer protection against tooth sensitivity**. Strengthens: Fluoride also helps to strengthen teeth day by day, protecting them from cavities. Gentle cleaning: Microparticles clean gently and effectively, removing plaque. **with continuous use, brushing twice a day. Main Features: Strengthens enamel and protects against cavities. Clinically proven effectiveness. F + Ca + Si. New formula. Effective protection for sensitive teeth. Ingredients: Limonene, Aqua, Sorbitol, Hydrated Silica, Oleaminopropylamineth-3 HCI, Hydroxyethylcellulose, Aroma, Cocamidopropyl Betaine, Saccharin, Sodium Fluoride. Safety Warnings: Contains: Sodium Fluoride / (1450 ppm F⁻).