I recently purchased and tried the 2 hour whitening kit from Rembrandt. The claim this product makes is that you will have dramatically whiter teeth with one 2 hour session. I am a huge coffee drinker and love red wine so I was hoping this product would help with the price my teeth pay for my beverage choices. Here are the specifics.
This kit comes with 8 small tubes of whitening gel. 4 for your top teeth and 4 for the bottom. Also included are 2 rubber mouth pieces. To begin you customize these to your own teeth by soaking them in very warm water for a few seconds to soften them, insert them into your mouth, one at a time, then bite down. Once they cool down your teeth impressions will be left behind creating a comfortable and customized fit for the whitening process.
To begin the whitening process you squeeze one small tube of the whitening gel into the mouth piece and let it set for 20 minutes. You then remove them, wait 10 minutes and do the same process again for a total of 4 times. The taste is minty, not unpleasant, and the customized mouthpieces are easy to wear. Due to time constraints on the particular day, I was only able to complete two 20 minute processes and planned to finish the following day. So what were the results?
Yes, I did see some whitening after only 2 applications. However, and this is a BIG however...later that night my teeth and gums ached so much! I was so uncomfortable! The pain was gone when I woke up the next morning, but it bothered me so much that I haven't been able to find the courage to do the other two 20 minute treatments. The results from the 2 that I did manage to do lasted maybe a few weeks. I am not sure if my reaction was uncommon, but it was enough for me to hesitate in recommending this product.