aqaufresh white trays are no really, really bad. they are just avarage.

when i bought this item i expected to end up with whiter teeth, but i didn't. they because a little whiter, but not too much. nobody ever noticed except my brother but he knew that i was whitening so doesn't even cout.

my teeth did not become sensitive, but i think that might be because thi sproduct doesn't really do much. i think it has same effects as a whitening tooth paste.

gel is disguisting, especially when it seeps out and you taste it, or God forbid, acciedntaly swallow it, EW! Gross stuff.

Good luck to you