Our Teeth Whitening Strips have been carefully formulated with a blend of ingredients to ensure a gentle, yet effective whitening experience.  PAP (Phthalimidoperoxycaproic Acid): This active ingredient is scientifically proven to safely remove all types of stains and discolouration from the teeth, without damaging the enamel or causing sensitivity.  Sodium Hydroxide: A common ingredient used in teeth whitening products, it safely and gently removes deep-set stains from within the enamel layer.  PVP (Polyvinylpyrrolidone): A protective ingredient that helps to prevent the build-up of stains and yellowing on the tooth’s surface for long-lasting whitening results.  Full ingredients list: Glycerin, PVP, Ethylcellulose, Phthalimidoperoxycaproic Acid (PAP), Alcohol, Hydrated Silica, Dicalcium Phosphate, Disodium EDTA, Sodium Hydroxide, Menthol. All ingredients used in the formula comply with UK, EU, and US regulations.