Nail polish (also known as nail varnish) is a lacquerthat can be applied to the human fingernail or toenailsto decorate and protect the nail plates. The formulation has been revised repeatedly to enhance its decorative effects, and to suppress cracking or flaking. Nail polish consists of a mix of an organic polymer and several other components, depending on the brand.[1] People use this liquid to create simple or complicated designs with bright colors, charms, or other.