REGENERATE™ Enamel Science Advanced Toothpaste and Advanced Enamel Serum are powered by exclusive and clinically proven NR-5™ ... technology, to regenerate enamel mineral.* People who consume acidic food and drinks may be at increased risk of enamel erosion. Erosion occurs over time, with serious consequences including transparency, yellowing, changes in tooth shape and sensitivity. REGENERATE™ Enamel Science is proven to reverse early enamel erosion, with 82% of enamel mineral regenerated after 3 days.** NR-5™ technology is the first and only technology clinically proven to form new hydroxyapatite onto enamel surfaces with identical crystal structure and chemical composition to the underlying enamel mineral. *Acts on early invisible stages of enamel erosion. Helps to regenerate enamel by restoring its mineral content and microhardenss with regular use. Clinically proven. **Based on an in vitro test measuring enamel surface microhardness after 3 days’ combined use of Advanced Toothpaste and Advanced Enamel Serum. read more