Pen is very easy to use snd does not cause any sensitivity to my gums. My only complaint if I can use that word is although I use it every day snd yes my teeth are whiter, they are not super white which I thought they would get to. I don’t drink red wine or black coffee, and although I drink black tea occasionally I always do the treatment well away from the tea.

Excellent

Great product. I have very sensitive teeth and the peroxide gel does not worry me at all. In a few days it has already taken all the stains from my teeth.

At first wondered if it will be the same as other whitening products I have been using. was well impressed by the performance and the also the taste was better