Don't use too much!
The two tubes I bought will last me a long time. I realized it foams up so much that I literally have to use one "drop" on my brush. Even a pea-sized portion is too much. After the first week of using a bigger portion, my front two top teeth began to show signs of sensitivity. Lessening how much I put on my brush seems to help. This is a very economical product and the tube should last a long time. Glad I tried it!
Rating: 5 stars