What active ingredients are used in the best teeth whiteners?

Hydrogen peroxide: This is the most common active ingredient in teeth whiteners. It works by breaking down the stains on your teeth.

Carbamide peroxide: This is a derivative of hydrogen peroxide. It is also effective at breaking down stains.

Sodium bicarbonate (baking soda): This is a natural abrasive that can help to remove surface stains.

Potassium nitrate: This ingredient can help to reduce tooth sensitivity.

Fluoride: This ingredient helps to strengthen teeth and prevent cavities.

The best teeth whiteners will contain one or more of these active ingredients. The exact combination of ingredients and the concentration of each ingredient will vary from product to product.