Antique Brass is a ‘living’ finish. That means it reacts to the air and moisture around it, causing it to darken (especially in the areas you touch it most). Our brass polish is designed to gently remove the top surface of the finish, allowing the ageing process to start again. Step by step 1. Begin by removing the front plate or handle. 2. Lightly rub the paste on the brass surface in small circles until it darkens in colour. 3. Gently wipe off the excess polish using the soft cloth. 4. Use a clean, dry part of the cloth to buff until shiny. Shop our brass polishing kit here. This polish isn’t suitable for our Bronze or Polished Nickel products.