It promised to turn me from this:
Basically, I was about to paint my teeth with a tiny glow stick.
That last step might or might not be necessary.
Can you see a difference between Day 1 and Day 7? Can you see ANY difference never mind 86 frikken dollars worth of difference??!! Because dear god that is what they are selling this kit for at Sephora.
In addition to not whitening my teeth, it also stung like a b!tch wherever the gel got onto my gums. Not surprising since one of its main ingredients is hydrogen peroxide...as in the stuff you used to turn your hair a nice crispy orange back in high school before you knew what toner was.
The application, while amusing, is actually highly impractical. The sponge tip is way too big to use on the narrower bottom teeth, even if I just used the edge of it, I had to risk the gel getting onto my gums and bringing pain and profanity.
Another flaw of the system's design is that it is impossible to get the gel onto the back teeth so even if this did whiten your teeth, you'll have white teeth in the front and ogre teeth in the back.
This product was a complete fail for me and I would advise that you keep your hard earned money.