What Are Teeth Whitening Strips
Whitening strips are thin, flexible plastic strips coated with a peroxide-based gel. They are designed to adhere to the front surfaces of teeth and deliver a bleaching agent over a set period. Most kits include upper and lower strips and are used once daily for one to two weeks.
How Whitening Strips Work
The active ingredient, usually hydrogen peroxide or carbamide peroxide, breaks down stains on and below the enamel surface. Peroxide penetrates the tooth structure and oxidizes colored compounds, which can make teeth appear lighter. Results vary based on concentration, treatment length, and the type of staining.
Safety and Effectiveness
Over-the-counter strips are generally considered safe when used as directed. Common side effects include temporary tooth sensitivity and gum irritation. The American Dental Association notes that whitening products can be effective for surface stains but may not work on all types of discoloration. For personalized advice, consult a dentist before starting any whitening routine.
