So, yeah my dad influenced us to use this product he said that it was perfect for me to use because I have had a yellowish teeth and I tried a lot of toothpaste but when my dad discovered this toothpaste after a week a we saw the improvement of our teeth. It is whittier now than before. We keep using this until now. Also, I feel the cool effect of this when you used it. Worry less, isn't it? Try this now.