Not a good buy
Bought it at a very affordable price but once I put it on my teeth, the application process was very tedious and quite annoying. The "gel" was lumpy and thick and did not stick well (I guess on the count of me salvating so much). I used cotton balls under my tongue which only helped for a little while. After I waited the suggested wait time, I tested out the product and ate a sweet glazed donut. Still the same sensitivity! Very disappointing.