Makes cleaning copper a breeze without using acid. It brightens your copper while completely rinsing off with only warm water. Specially formulated to clean copper, stainless steel, and brass. Instant cleaning action, no rubbing or buffing. Contains no ammonia, chlorine, sulfuric acid or carcinogenic benzene derivatives, no rubber gloves needed. Biodegradable and safe for the environment. Not affected by freezing or hot temperatures.