Compact Discs and DVDs are read by bouncing a laser off the metal foil in your disc- back to your player's laser unit. The players are also designed to guess what the audio or video was supposed to be if there's something like dirt interrupting the these pulses, which can also happen if there's manufacturing haze on the disc. If there's too much of an interruption, your player can't guess anymore, and you get a skip. Even if your disc doesn't skip, you can still have a whole lot of guessing going on, and your picture may not look as good, and your audio may seem harsh. Regularly clean your CDs and DVDs to keep them as faithful to new condition as possible, and we also highly recommend our CD-DVD-8 for brand news discs for optimum performance, to remove any dirt or manufacturing haze on the discs. Lasermedia CD-DVD-8 is a true professional archive quality cleaner for your CD, DVD, CD-R, and DVD-R collection, and uses the purest de-ionized water, specialized non-ionic surfactants and other ingredients to gently and safely lift contaminants from your discs. . Formulated and manufactured in USA from USA manufactured products. Non Flammable Non Hazardous. To use: Spray a small amount onto the bottom (non-printed side) of the disc and using a clean, soft, microfiber cloth (not included) wipe straight across the disc. Do not wipe in a circular pattern . Allow the disc to dry before use. Make sure the cleaning cloth is clean before use. For very dirty discs, for instance with jelly on them, allow cleaner to soak into the dirt to lift it off the disc surface for a minute or more and repeat as needed. This fluid can be used as often as desired since it will not harm the disc surface in any way, and it will not leave an oil slick on your disc. Always use a clean microfiber cloth to clean the disc after applying the fluid, and a cloth that was not washed with fabric softeners which contain soy wax. Note: This product is not intended to *fix* scratches, but it is there is no better cleaner to safely remove dirt, and this product can lift dirt from scratches rendering them more playable. There is no cleaner that can safely remove major scratches, dings, or gouges, and true removal requires a lengthy and costly professional process of optical quality burnishing. Weather note: If received frozen due to cold weather, DO NOT MICROWAVE BOTTLE, but allow to thaw overnight, shake, and use as directed.