"Plus Ultra's effective and natural Teeth Whitening Strips are gentle on sensitive teeth, made with dentist-approved enamel safe ingredients and will not cause irritation during treatment. Vegan and cruelty free made with natural mint, this strip treatment will give you fresh breath and make your teeth shine brighter. For most effective treatment, lightly dry teeth; Apply strips to top and bottom teeth, leave on for 30 minutes and then remove and rinse. "