Update 3:
One year later, I want to give my overall opinions of this product. It works, but you really have to continuously use it. Your gums will become sensitive, which is not a good trade in return for white teeth. I have noticed tiny white spots that are now on my teeth forever. For ~$30, I guess it's worth it for the short term, but your teeth will just return back to how it was originally.
Update 2:
I finished the entire tube of the whitening gel, but I only used the product when I felt like it. My teeth return back to its original color as quickly as it whitened. I still have the whitening brush, but of course, the results wouldn't be huge with just that.
I've also kind of given up on white teeth. I have other things to worry about. I did buy some toothpaste that (based on reviews) seem to give noticeable results, but also can result in gum damage. You can win some and lose some.
All in all, I would give the product a 3/10. It worked, it lasted (a bit), and faded away (quickly). My teeth did feel sensitive the few times I used the product (after long breaks), but I think it's just not worth it. Not worth the money or pain (in the long run for your gums) just for white teeth. Getting it professionally done might be a lot better and require fewer treatments (compared to daily whitening treatments at home).
The product was fun while it was hyped up though. I can say that I tried it.
Update:
So I would like to say that my teeth are definitely quite a few shades lighter! Since the back of my teeth are sensitive, so I do not put any whitening gel on those parts of my teeth. After a good looking, my front teeth are vastly different from the back teeth! They're so much whiter!
But! some of my teeth are getting "white spots" and they're not going away. Also, these results can quickly fade if you drink lots of coffee, tea, wine, soda, etc.
If you just want to know about the results: it really works!
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