The Dynamic Chain Cleaner is a powerful degreaser that can be used for the entire drivetrain of your bike. The unique formula of the Dynamic Chain Cleaner is based on a two-component concept. The chain cleaner acts as a degreaser, dissolving oils, fats, and other dirt. At the same time, it leaves a protective film on the drivetrain components, which preserves the metal parts from complete degreasing. Your chain will look like new. The Dynamic Chain Cleaner can be used for all parts of the bike drivetrain, including the chain, cassette, and derailleur. For thorough cleaning of your chain, it's best to use a cloth or a brush in addition to the chain cleaner. Regular cleaning and subsequent oiling of your chain will extend the lifespan of your bike's drivetrain.