Increase the effectiveness of the advanced toothpaste with the enamel serum from regenerate one step in the enamel science boosting serum kit the enamel serum refill is designed to replace the boosting serum once finished in order to continue use with the kit the exclusive boosting serum maximises the power of enamel mineral regeneration even in interdental spaces that are hard to reach utilising nr 5 technology and fluoride the boosting serum helps provide focused protection for teeth