An old, heavily rusted metal cabinet stands in a realistic setting. One realistic adult human hand enters from the left side of the frame holding a fully visible clear plastic spray bottle filled with purple cleaning liquid. As the trigger is pressed, the spray stream stays physically connected to the nozzle and spreads purple foam evenly across 100% of the visible metal surface of the cabinet. Rust visibly flakes off, small rust particles fall downward, and bare iron is gradually revealed benea