Noticed a difference but...
This product really does give results after first use, however I don't think the results are longstanding.  My teeth looked whiter in the morning but seemed less white by the end of the day. It's a little messy and doesn't taste great. I brushed with regular toothpaste after use. Would probably like it better if it were a paste. I plan to continue using the product to see if the results last longer with continued use.
Rating: 3 stars