“I really thought I would like this product,it might be whitening my teeth i have used it 3 times an i can tell a little but the mouth tray is to big for my mouth an takes quite a bit of gell so it will cover the teeth buy I can't keep it inside my mouth until the light beeps, its a mess the trays should have been made to mold to your teeth like a retrainer, but with this product being so expensive I would have though better quality !!! But I order some trays I can mold to my teeth cost me $15.00 but we'll see”