What the others said in the comments. I rubbed 4 times until my hand got cut, both with the repair paste and with the polish. It just slightly smoothed the surface of the scratch, but the scratch is still clearly visible. Scam as seen on TV product.

I followed the instructions closely and the result was that I destroyed the screen of an expensive phone.
I do not recommend it, on the contrary, I urge you not to buy it

Unfortunately, it is not effective at all for medium-depth scratches. The quantity of repair material is also minimal and insufficient.

Just to help. It's not a bad product as generally stated. If you follow the instructions correctly, it does the job. I managed to greatly improve 2 scratches on my phone. Basically, it smooths out the scratches and the shallower they are, the better the result. It requires strong rubbing in the first phase for a considerable amount of time until your hand gets tired. The negative aspect is that it contains very little product. Mine ran out after this use. But okay. Maybe I put too much because at first, I also thought it wasn't doing anything and got frustrated. It worked on the third round of rubbing. I think I couldn't have achieved better results, I don't know about other products. I believe that glass, in general, is neither plastic nor acrylic, where it might be easier to work with. If you want the scratches to completely disappear, just change the screen! Don't bother yourself

1) It does not do what it promises.
2) The small quantity for the windshield is not enough for even one hand, let alone for a repeat application as it claims if it doesn't come off on the first try.
3) It costs twice as much as they sell it in Germany.