I will be as thorough and honest with my experience as possible for everyone who takes an interest in reading this. I went to a store and saw this product and it caught my eye. I looked up the reviews and even though reading many bad ratings I read just as many good so figured I would try it. I swore to myself that I had to use it fully for 3 days before making a final conclusion to my experience and now I wish to share it to you all. Pros: 1. I've never had a product that whitened my teeth as well as this product has. I've tried anywhere from special toothpastes to whitening strip and nothing done the job like this mouthwash. 2. This product did an excellent job at eliminating bad breath and keeping it at bay. Cons: 1. First use the product burning my tongue and gums horridly. By second use it still burned pretty bad, but it lightened a tad more after each use. Still burns way more than it should. 2. Products works too good... I've noticed if I eat anything sugary within a couple hours or so after use, the food will taste different. I especially noticed this with coffee. 3. By day 2 of use, my tongue is sore for a few hours after use, and my gums are very sensitive. Hurts to brush my teeth. 4. Day 2 and 3, the back section of my tongue near my tonsils sting for hours after use. Overall this product got a 2 out of 5. It does its job well, but with a very heavy toll on the mouth.