Best teeth whitening ever used

I've tried so many teeth whitenings it's unreal! One day I was watch a make up tutorial on YouTube and she mentioned she used Dr George's kit so I order it. You have to use it 3 times a day. So far I've used it for 2-3 days and wow I can notice such a difference already..my teeth were yellow, they needed something doing to them and I'm so glad I bought this. I have never written a review for anything but because I'm finding this product so good I had to write something!! Have some images of teeth so far if I can add it to this I will. But Defo work a try hasn't made my teeth sensitv. I'm using the blue light thing to and I think that makes a huge difference in the process.