Reverse the early erosion process from modern diet and lifestyle with this three minute, three days, once a month dental treatment. Designed to boost the effectiveness of the Advanced Toothpaste by 43% to help regenerate lost enamel and give your teeth new life. Set includes: Regenerate Enamel Science NR-5 Boosting Serum 16ml Regenerate Enamel Science Activator Gel 16ml 2 Custom Fit Mouth Trays 1 Mixing Stick To use: To be used every month for three consecutive days, ideally just before bed, for a three minute application. Take the mouth tray and apply one thin layer of the serum in the mouth tray, then add one layer of activator gel on top of the serum, using the mixing stick to ensure the two ingredients are mixed adequately. Insert the mouth tray and hold in place for three minutes, then remove and gently rinse away any residue.