Sensitive toothpaste is a type of toothpaste designed specifically for people with tooth sensitivity. Tooth sensitivity is a common condition that occurs when the enamel on the teeth wears down, exposing the underlying dentin and causing sensitivity to hot, cold, or sweet foods and drinks.

Sensitive toothpaste typically contains a combination of ingredients that help to reduce tooth sensitivity, including:

1. Potassium nitrate: This compound helps to desensitize the nerves in the teeth, reducing the sensation of pain and discomfort.

2. Fluoride: Fluoride helps to strengthen the enamel of the teeth, making them more resistant to sensitivity and decay.

3. Strontium chloride or sodium hexametaphosphate: These compounds can help to reduce tooth sensitivity by blocking the exposed dentin tubules, which are the microscopic channels that allow sensations to reach the nerves in the teeth.

Sensitive toothpaste is used just like regular toothpaste, by applying a small amount to a toothbrush and brushing the teeth twice a day. It's important to use a soft-bristled toothbrush and to brush gently, as brushing too hard can actually contribute to tooth sensitivity by wearing down the enamel on the teeth.

In addition to using sensitive toothpaste, it's also important to practice good oral hygiene, including brushing the teeth twice a day, flossing daily, and visiting the dentist regularly for check-ups and cleanings. Limiting the consumption of acidic and sugary foods and drinks can also help to reduce tooth sensitivity and improve overall oral health.