Bronze sculptures can develop an unappealing tacky surface over time due to oxidation, environmental factors, and improper care. Here are five effective prevention methods:

1. Regular Wax Application: Apply a high-quality microcrystalline wax every 6-12 months. This creates a protective barrier against moisture and pollutants while maintaining the sculpture's natural patina.

2. Proper Cleaning Techniques: Use a soft brush and distilled water for routine cleaning. Avoid harsh chemicals that can strip the protective patina and cause surface stickiness.

3. Environmental Control: Maintain stable humidity (40-50%) and temperature (18-22°C) in display areas. Extreme conditions accelerate oxidation and surface degradation.

4. Protective Coatings: Consider professional lacquer coatings for outdoor sculptures. These specialized finishes provide long-term protection against environmental elements.

5. Gentle Handling: Always wear cotton gloves when touching bronze sculptures. Skin oils and acids can interact with the metal surface, leading to tackiness over time.

For valuable pieces, consult professional conservators who can recommend customized preservation strategies based on your sculpture's specific alloy composition and environmental exposure.