Please watch this short video which shows how well the GlassRenu system works. The scratches repaired here were caused by either a diamond, carbide or glass cutter. In other words, they were extremely deep (around .0012 thousandths). We know of no other system capable of achieving similar results, especially not in the short amount of time we are able to complete deep scratch repairs in. And best of all, this video shows conclusively that the GlassRenu system can tackle the deepest of scratched glass damage without leaving any discernible waviness or distortion.