Before learning how to clean brass god idols, it helps to understand why they change color.
Brass is a natural metal alloy that reacts with air, moisture, and touch. Over time, it develops a dark layer called patina. This is not damage—it’s a natural process. In fact, many people consider patina a sign of authenticity.
However, excessive dirt, oil residue from diyas, incense smoke, or moisture can make idols look neglected. Regular, gentle cleaning helps prevent this buildup.