22% Deluxe Teeth Whitening Systemstar rating 5TreMay 20, 2010Product was received as stated. The impressions were easy to make. The temp trays were easy to use as well. Whitening- the 22% has been very tolerable in terms of the sensitivity. The whitening however, has taken longer than expected given the strength. I started with the top teeth so I could better tell the difference and it was noticeably different by the third/fourth day but the change is much slower after that-- and I slept with the trays in. Overall, I am satisfied, will continue to use the product and recommend other's to use it too. Oh, and I had a question so I called them but got a recorded msg. I left my question and they got back to me w/in an hour or so!