Brass cleaning involves the process of removing tarnish and dirt from brass items to restore their shine. Common methods include using commercial brass cleaners, vinegar, or a mixture of baking soda and water. These solutions help break down oxidation and grime, making it easier to polish the surface. After applying the cleaning solution, a soft cloth or brass brush is typically used to gently scrub the item. It's important to rinse thoroughly and dry the brass to prevent further tarnishing. Regular maintenance can help keep brass fixtures and decorative items looking their best.