FYI I love Dr. Bronners products and use their liquid soaps every day. As far as natural toothpastes go, this one is definitely in my top 3 for taste. I feel that this Toothpaste has a super fresh minty taste that's very palatable for all. The only thing is it doesn't lather very well, therefore you have to use a lot more of it per brush. I personally prefer a toothpaste that lathers easier.
I love this as a toothpaste - it feels nice to use and the ingredients are quite natural, which is always a bonus. But it hasn't made a difference to my teeth or my partners, so I wouldn't recommend it for whitening even though that's what it's being sold as.