Polished bronze sculptures are prized for their lustrous finish, but exposure to air, moisture, and pollutants can lead to unsightly tarnishing. To preserve their beauty, follow these proven methods:

1. Regular Cleaning: Gently wipe the sculpture with a soft, lint-free cloth to remove dust and fingerprints. Avoid abrasive cleaners, which can scratch the surface.

2. Protective Wax Coatings: Apply a high-quality microcrystalline wax every 3-6 months. This creates a barrier against moisture and oxygen, slowing oxidation.

3. Environmental Control: Display sculptures in low-humidity environments (ideally below 50% RH). Use silica gel packs or dehumidifiers in enclosed spaces.

4. Lacquer Sealants: For outdoor sculptures, consider professional-grade lacquer coatings that block tarnish-causing elements. Reapply as needed.

5. Handling Precautions: Always wear gloves when touching bronze to prevent acidic oils from your skin from accelerating tarnish.

6. Avoid Harsh Chemicals: Never use ammonia or vinegar-based cleaners, as they can etch the metal. Opt for pH-neutral bronze cleaners instead.

By combining these methods, collectors can maintain the radiant finish of bronze artworks for generations. Remember that some natural patina development is inevitable and can add desirable character to antique pieces. For valuable sculptures, consult a professional conservator for tailored preservation advice.