Porcelain sculptures are delicate artworks vulnerable to chemical exposure, which can cause irreversible damage. Recognizing the signs early is crucial for preservation. Here are key indicators of chemical damage:

1. Discoloration: Chemicals often leave uneven stains or bleached patches. Look for yellowing, dark spots, or faded pigments, especially in areas with historical repairs.

2. Surface Erosion: A chalky or powdery residue suggests acid exposure. Gently run a fingertip over the sculpture—if the glaze feels rough or flakes off, chemicals may have degraded the surface.

3. Cracked or Bubbled Glaze: Heat-reactive chemicals can cause micro-cracks or bubbles under the glaze. Hold the piece under angled light to reveal these subtle defects.

4. Odor: Persistent acidic or pungent smells near the sculpture indicate residual chemical reactions.

5. Structural Weakness: Chemicals like chlorine weaken porcelain over time. Tap the sculpture lightly—a dull thud (instead of a clear ring) signals internal damage.

For valuable antiques, consult a professional conservator before attempting cleaning or restoration. Store porcelain away from cleaning agents, humidity, and direct sunlight to prevent further deterioration.