The mineral layer renewed by Crystal brings back natural teeth whitening and youthful shine. Very suitable for teeth that have already been greatly lightened. For optimal results, Swissdent Crystal should be used in the evening without rinsing the mouth with water. The extended effect of the ingredients on the enamel achieves better regenerative and rejuvenating results. The advantage of SWISSDENT is the very low concentration of the brightening agent CaO2 (