Detailing clays are a type of cleaning tool used in the car detailing process to remove bonded contaminants from the paintwork of a vehicle. These contaminants can include tar, rail dust, industrial fallout, and other embedded particles that traditional washing cannot remove. Detailing clays are available in various grades, with finer grades offering a gentler cleaning action for delicate surfaces. When used properly, detailing clays can leave the paint feeling smooth and polished, promoting better adhesion for waxes and sealants.