Impressive Smile has been involved in the dental industry for over 30 years by creating Impressive Smiles for patients and delivering quality products to consumers as well as to dental professionals. Fast White System is one of those products. Fast White System is really works. If you tried other whitening products that are available on the market today and still looking, then you have come to the right place. You won’t be disappointed. Fast White is your solution to whiter, brighter teeth in days instead of weeks. Fast White's safe and effective ingredients work in 60 minutes a day for five days, with no overnight treatment required.