how do teeth whitening strips work

Teeth whitening strips work by using a thin layer of a peroxide-based gel, most commonly hydrogen peroxide or carbamide peroxide, applied to a flexible plastic strip. When placed on the teeth, the peroxide penetrates the enamel and dentin.

This peroxide compound breaks down stain-causing molecules through an oxidation process. These broken-down molecules become smaller and less pigmented, making the teeth appear lighter. The results typically develop over several days or weeks of consistent use, depending on the product's strength and application duration.

• Active Ingredients: Hydrogen peroxide, carbamide peroxide.
• Mechanism: Oxidation of chromogens (stain molecules).