Aquafresh White Trays Slip & Slide
This product would work better if the trays stayed in place and the gel could spead over your teeth evenly.I found even after five days the bottom tray hard to keep in place and most of gel going down my throat!The whitening/pain ratio is about the same as Crest strips. I found minimal irritation with average results.Please take back to the DRAWING BOARD for better results!