I wanted to leave a review. I found Springene Fresh Boost by accident a couple of years ago. My teeth have always been very sensitive and I used to avoid eating fruit. After I discovered that I can eat an apple or grapes and brush my teeth with no pain I was thrilled. I also had to change my dentist some time ago and after checking my gums he told me mine were one of the healthiest gums he had seen in a long time. I only attribute it to Sprinjene. I wouldn't use any other toothpaste ever again. Last time I ordered White Boost and even that one didn't cause any pain or sensitivity. What an amazing product! Please don't change any formulas. Your product is perfect as is.