Review on Britenz Natural Teeth Whitening Pen - 0.05 fl. oz. by Richard Singleton

I've been using it for about a week and haven't noticed any results. This may take some time, and that's okay. I think part of the problem is that the gel probably rubs off a bit when I put my lip down to cover my teeth (after application). Too bad it's not as "dry" as the old Crest Night Effects (which I can't find anymore) after a few seconds of use. I still rate it 4 stars because of the application method. I grind my teeth at night so I rub them to expose the nerve on the chewing surfaces. For this reason, I cannot wear bands or a face mask. The strips and splints apply the gel directly to the nerve and I am in excruciating pain after a few uses. This product allows me to brush directly on the front surfaces of my teeth, avoiding chewing surfaces (and a lot of pain). I would have problems with any other whitening product now (even after only a week). And I'm not in pain yet. So I agree, even if it takes longer to get the result, because I avoid pain.