You would think that it would be messy or complicated, possibly even wondering if you have to sit there with your mouth hanging open while the gel sets ... NOPE! It's very simple, however, it does add a couple extra minutes to your routine until you get the hang of it.
All in all, I'm impressed with the results. I also believe this is a great alternative to the more expensive products and services out there especially for the budget conscious, and in just 8 days my teeth have in fact whitened at least 2 shades! I'm extremely happy with the results and have even bought additional Optic White toothpaste. I plan to keep up on the whitening and have become a convert to Colgate. I like the new look, and besides, you only get one set of teeth. #BrushWhitenGO