We started using the Biomin toothpaste a few months ago as it was recommended to us for our two sons. Our eldest son who is 10 had reoccurring stains on his two front teeth that became very dark in between dentist visits. He was very self conscious and affected the way he smiled. Since using Biomin 6 months ago, the stains haven’t returned in fact our sons teeth are whiter than they have been for years. Our younger son likes it as it is mild enough for him (other minty pastes have been too strong and uncomfortable). My husband and I use Biomin now too as it is great for sensitive teeth and it feels like you are getting a very thorough clean. We highly recommend this product!! Mary