Tooth sensitivity is caused when gums recede and parts of your teeth are exposed. When teeth come in contact with something hot, cold, or sweet, sensations are carried directly to the nerves causing painful sensitivity. Its exclusive Pro-Argin technology provides INSTANT and LASTING RELIEF from tooth sensitivity with regular use. It WORKS FROM THE FIRST USE* by helping block open tubules to protect sensitive teeth which builds LONG-LASTING PROTECTION against sudden shocks of pain. Colgate is India's Most Trusted oral care brand and is IDA certified. This toothpaste is 100% vegan, sugar-free and gluten-free.This toothpaste is made in India, in our manufacturing unit that is awarded with TRUE ZERO WASTE PLATINUM Certification.