Bought as a refill to what I received from my dentist
I somewhat knew what I was getting in that this is what was provided to me by my dentist along with custom trays for my teeth. They are the same exact brand/strength as what I already had. Just a refill at a much better price than I could get from my dentist so it fit the bill exactly. 4 stars, not more than I expected but just exactly what I expected.
Rating: 4 stars