Intensive Enamel Repair, Pronamel’s most advanced enamel care formulation, is proven to help actively repair acid-weakened enamel and protect teeth from future acid erosion—while effectively removing stains to help restore teeth to their natural whiteness. It works by locking in repairing minerals that absorb deep into the surface structure of enamel to help repair microdamage and rebuild enamel strength, leaving your teeth stronger and more protected.