How effective are whitening toothpastes?
All toothpastes remove surface stains. Whitening toothpastes remove surface stains only and do not contain bleach. Over-the-counter and professional whitening products contain hydrogen peroxide (a bleaching substance) that helps remove stains on the tooth surface as well as stains deep in the tooth. Whitening toothpaste can lighten your tooth’s color by about one shade.