Top positive review
It seems to be working and good value
3 May 2019
So far, so good. I have used it twice. The mouth guard is really bright. The adapter does not fit my Samsung phone, so I have to use s plug. The wire could be a bit longer for that, but it's fine. I noticed my teeth were brighter after the first go. I think they are brighter again second go. 15 minutes if you use the mouthguard. 25mins if you don't. It's easy to use. Shame the ingredients are not on the box. So far, I would recommend. I will update if that changes. I have sensitive teeth and use sensodyne toothpaste and the gel does not irritate them. I do know I have used it, but dont know if that is from the pressure of the mouth guard you bite down on, or the gel. Either way, it's not uncomfortable of concerning. I have been careful to avoid my gums. I put less gel on tonight, as second time using and I am still experimenting. Tonight, I used a pad in my mouth behind the shield to absorb any saliva, like what they do if you have a tooth out. That seemed to work well.