Porcelain sculptures, prized for their delicate beauty and intricate craftsmanship, are highly susceptible to damage when stored in damp environments. The most common types of deterioration include:

1. Mold and Mildew Growth: High humidity encourages mold and mildew to thrive on porous surfaces, leading to unsightly stains and potential material degradation.

2. Glaze Cracking and Flaking: Moisture absorption can cause the glaze to expand and contract, resulting in fine cracks (crazing) or complete flaking, diminishing the sculpture's aesthetic value.

3. Structural Weakening: Prolonged exposure to dampness weakens the clay body, making the sculpture prone to breakage or collapse, especially in intricate designs.

4. Efflorescence: Salt deposits may form on the surface due to moisture evaporation, leaving white, powdery residues that are difficult to remove without professional cleaning.

5. Metal Component Corrosion: If the sculpture includes metal fittings or supports, damp conditions accelerate rusting, which can stain or destabilize the piece.

To mitigate these risks, store porcelain sculptures in climate-controlled environments with stable humidity levels (40–60%) and ensure proper ventilation. Regular inspections and gentle cleaning can also prolong their lifespan. For valuable pieces, consult a professional conservator for tailored preservation strategies.