Pure geldverspilling

I wanted to bleach my own teeth for a long time and came across this at the herb barrel. It costs 35 euros and it promised 8 shades of whiter teeth without damage. So I got to work enthusiastically and wanted to invest in it. It turns out to be a waste of money. I had to press the bit and wait 20 minutes. First, the bit was very small and unevenly filled. Then it turns out not to work at all! I don't see any difference at all while I have quite yellow (tobacco and tea) teeth. I'm really upset and I hope to find something much better! So don't buy!

Translated from Dutch by AWS