A corrosion inhibitor, often known as an anti-corrosive, is a chemical substance that, when added to a liquid or gas, slows down the pace at which a substance that comes into contact with the fluid, usually a metal or alloy, corrodes. The kind of fluid, amount of water, and flow pattern all affect how well a corrosion inhibitor works. Typically in spray form in conjunction with a lubricant and occasionally a penetrating oil, corrosion inhibitors are widely used in industry and may also be found in over-the-counter products. To stop copper or lead from leaking out of pipes, they can be added to water. The creation of a coating, sometimes called a passivation layer, which blocks the corrosive substance's access to the metal, is a typical method of preventing corrosion. Corrosion inhibitors, on the other hand, are substances that are added to the fluids that surround the metal or related item. Permanent treatments like chrome plating are typically thought of as inhibitors.