I bought this for my wife who had two sensitive molars. She had tried other brands (Colgate Sensitive & Sensodyne) , each for a month but no results. Within 1 week (following all instructions) there was a slight improvement and now 4 weeks in the sensitivity is at a very low level. There are no side effects other than cleaner feeling teeth and, having read all the information provided by BioMin, better knowledge on how to care for teeth. She’s very happy with this product and will be staying with BioMinF. Purchased directly from BioMin and very happy with delivery time. Grizzly 2019
