I've only used this product 3 times so far and I definitely see a big difference. It's easy to use and you'll love the extra custom mouthpiece that fits your teeth perfectly. It was easy to shape and actually very pretty to look at. There's not a lot of flavor there. Tastes neither good nor bad. I only had a slight peroxide taste. The blue vitamin gel you use after that really helps with sensitivity so I would just add that to the kit. Otherwise 5 out of 5! I love this stuff!
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