Prepare for slobber...
Here's my advice after trial & error with this whitening kit:<br /><br />MOST IMPORTANT- make sure the mouth trays are SOFT enough.. they need a full 15 seconds in the water, any less & you will not be able to suck out the water/air enough. They need to be TIGHTLY molded to your teeth in order to stay in while whitening. I messed up my first tray, but it was the extra one ( was nice of them to supply ).  I was able to mold the other 2 with no problems.<br /><br />Secondly,  if you're going to use the blue light, you're going to slobber.. stay close to a sink where you can spit periodically.<br /><br />What I like about this kit:<br />1. My teeth looked whiter after only two treatments.<br /><br />2. I can put the gel exactly where I want it. I have a couple molars that are way too sensitive for the gel, so I skip those & put it directly on my other teeth, then put the trays in. Voila.<br /><br />3. I have extremely sensitive teeth.. they always hurt like heck after crest whitening strips. I don't know what the difference is here, but this gel does not make my teeth hurt. Big bonus for me.
Rating: 4 stars