Your music data is packed incredibly densely on a CD or DVD. There are 10s of billions of digital bits on a single DVD. LAST CD/DVD Cleaner and Treatment creates an optically clean surface. This helps your player read data without errors and associated distortion, or in bad cases, mistracking. This exclusive formula cleans dirt and fingerprints, repairs minor scratches and polishes the surface of the disc, improving the optical quality and allowing for more accurate reading of the data. The same polishing action keeps dirt and fingerprints from sticking to the surface.