I gave it my best try. I used this product for 3 weeks hoping to whiten my teeth. I used it twice a day every day as the instructions recommended. The mouthwash didn't taste too bad. But then I had to use the pen with the whitening gel. It came out onto the brush in large gobs. It was too liquidy to stay on the brush long enough to really brush it onto my teeth appropriately so I had to keep adding more. The taste was horrible as it leaked into my mouth. It made my tongue and gums sting and tingly. I had to leave it on for a while before I could rinse or anything and it was a nasty feeling. But I continued using it for the full 3 weeks in hopes of whiter teeth. But it was spotty. It seems to only whiten parts of my teeth and leave other parts darker shades. It did not get rid of most of the stains, even light ones. This is definitely a product I would not recommend or use again. Effectiveness Only whitened in small areas. Convenience Did not take long to use, but had to keep squeezing out more gel. Minimal Side Effects Again, made my tongue, gums, and lips sting and tingly.
Bay City, MI