The unique formula of BioRepair PRO WHITE whitening toothpaste combines the action of MICROREPAIR nanoparticles (biomimetic and biocompatible particles with the ability to rebuild enamel and dentin) with the patented PVP polymer, which creates a special coating/filter on the enamel, thanks to which it removes existing deposits, and also creates a shield that prevents the formation of new deposits. MICROREPAIR particles remineralize the enamel and rebuild micro-damages invisible to the eye. PVP polymer creates an incredibly thin coating on the enamel, preventing pigments and discoloring compounds from adhering to the enamel, making the teeth shine more and more with each passing day. Unique synergistic action. The paste contains hydroxyapatite microcrystals. It does not contain fluoride or gluten.