For long term protection against sensitivity, use Colgate Sensitive toothpaste.
Colgate Sensitive toothpaste contains Potassium Citrate, clinically proven for sensitivity relief in exposed dentin. It provides long term protection against sensitivity and cavity with regular use. Now get fast relief in just 2 weeks and fresher breath that lasts all day. Brush two times daily with Colgate Sensitive Original for healthy teeth and gums. Apply to a gentle toothbrush, making sure to brush the sensitive areas of the teeth. It comes in a 40gm tube.