Key Features Most other sensitive toothpastes primarily numb sensitivity. Colgate Sensitivity Pro-Relief works by plugging the channels to block the tooth sensitivity. With regular use, it builds a long - lasting Protective barrier that acts like a seal against sensitivity. Receding gums and damage to your enamel can expose thousands of microscopic channels which lead to your tooth's centre. When your teeth make contact with something hot, cold or sweet, sensations are carried down these channels directly to the centre causing tooth sensitivity. Directions for use: For instant relief, apply directly to the sensitive tooth with finger tip, and massage gently for 1 minute, once a week or less frequently. Apply to a gentle toothbrush making sure to brush twice daily or as directed by a dentist. Rinse after brushing. Do not swallow. Sensitive teeth may indicate an underlying problem that may need prompt care by a dentist if sensitivity persists. Children of 6 years and younger: Use a pea sized amount for supervised brushing to minimise swallowing. In case of intake of fluoride from other sources consult a dentist or doctor. Control sugar intake. Get a dental check up at least once a year. Ingredients: Calcium Carbonate, Sorbitol, Arginine Bicarbonate, Sodium Lauryl Sulfate, Flavor, Sodium Silicate, Sodium Carboxymethyl Cellulose, Sodium Monofluorophosphate, Sodium Bicarbonate, Titanium Dioxide, Potassium Acesulfame, Xanthan Gum, Sucralose, in aqueous base.