What would you do to make a metallic object regain its lustre after it has lost it's sheen?

To restore the lustre of a metallic object, you can clean it using a mixture of warm water and mild dish soap to remove dirt and grime. For tarnished metals like silver, applying a specialized metal polish or a paste made from baking soda and water can help restore shine. Gently buff the surface with a soft cloth or microfiber towel, and finish by applying a thin layer of wax or oil to protect the surface and enhance its sheen.