These enamel-safe whitening strips use clinically proven ingredients to whiten teeth in 14 days without sensitivity, protecting enamel for effective, gentle oral care General Information: Pearly whites in no time! Ideal For: whitening teeth without causing sensitivity How to apply: Open strips - use the longer strip for top teeth and shorter for bottom teeth. Dry teeth. Apply strips to your teeth for up to 60 minutes. Avoid eating or drinking. After 60 minutes, remove and brush teeth as normal Ingredients: PVP Glycerin Hydroxypropyl methylcellulose Aqua Alcohol Phthalimidoperoxycaproic Acid (PAP) Sodium Chlorite Sodium Hydroxide Disodium EDTA Menthol Hydroxyapatite Hydrogen Peroxide