I bought this product after seeing all the videos on Instagram. Please do not buy or believe any positive review or video you see about this product. It is 100% not true. I used this product 2 times a day for 3 weeks and there was absolutely no difference. If you buy this you will have the same experience as me or many other people. When you see a video posted in Instagram check the comments to see people’s feedback. It’s always negative because this product is a complete scam. There are cheap toothpastes (1 euro) that is the equivalent of this. It made zero difference to my teeth! I asked for a refund and was completely ignored. This company should be removed from Instagram for fake advertising.