Yotuel All in One Carbamide Peroxide Whitening Toothpaste. Feel the difference the first whitening toothpaste proven to improve your enamel. With all the benefits of Yotuels patented Formula which has been designed by three dentists, and is recomended all over the world. This tooth paste contains carbamide peroxide, Fluoride, calciumandphosphates to effectively whitten your teeth and at the same time remineralise your enamel and prevent tooth decay. Yotuel efficiently and gently cleans and whitens your teeth without detergent. Detergent is not necessary to clean your teeth and most of the Recurrent Aphthae Ulcers (RAU) are a consequence of the presence of Sodium Lauryl Sulphate in toothpastes. If you suffer from ulcers in your mouth, try any of our toothpastes and send us an e-mail with your experience.