We have been using this brand of toothpaste for several years now, they have several different flavors to chose from, but we really like the Advanced Whitening. It contains baking soda and peroxide, which leaves my teeth feeling really clean and fresh. It is in refreshing mint with no after taste.
They say in 7 days you will see a difference, but we have used this for so long now that our teeth are pretty white now.
You can get two refills in a box for $3.97 and it will last my husband and myself for several months, so it is cheaper buying two refills, you get a holder and you just drop in the refills and you are good to go.
This is not safe for children under 2 years of age, and always supervise young children with toothpaste and mouthwashes.
When you use this toothpaste you can actually feel it bubble up in your mouth, this helps to prevent tatar build up, it helps to strengthing your teeth and prevent cavaties, all in all it is the perfect toothpaste for us.