Bronze sculptures are timeless works of art that require proper care to maintain their beauty. One common issue collectors face is the development of a greasy film on the surface, which can dull the appearance and accelerate deterioration. Here are the most effective prevention methods:

1. Regular Dusting: Use a soft, natural-bristle brush to remove dust particles weekly. This prevents oil buildup from dust accumulation.

2. Proper Handling: Always wear cotton gloves when touching bronze sculptures. Skin oils transfer easily and contribute to greasy film formation.

3. Controlled Environment: Maintain stable humidity (40-50%) and temperature (18-22°C) to prevent condensation that can trap oils on the surface.

4. Microcrystalline Wax Protection: Apply a thin layer of museum-grade wax every 6-12 months to create a protective barrier against oils and pollutants.

5. Gentle Cleaning Solutions: For existing grease, use a solution of 1% mild soap in distilled water with a soft cloth. Always test on an inconspicuous area first.

6. Avoid Commercial Polishes: Many contain oils that initially shine but eventually create problematic buildup.

7. Professional Conservation: For valuable pieces, consult a conservator annually for specialized cleaning and assessment.

8. Display Considerations: Keep sculptures away from kitchens or high-traffic areas where airborne grease is more prevalent.

By implementing these preventive measures, you can preserve the natural patina and beauty of your bronze sculptures for generations. Remember that prevention is always better than restoration when it comes to maintaining metallic artworks.