Porcelain sculptures are delicate artworks that require precise environmental conditions to prevent damage over time. The ideal humidity level for storing these pieces typically ranges between 40% and 55%, but several factors influence this range.

1. Material Sensitivity: Porcelain is highly porous, making it vulnerable to moisture absorption. Excessive humidity can cause warping or cracking, while low humidity may lead to brittleness.

2. Glaze and Finish: Sculptures with glazed surfaces are less prone to moisture damage but still require stable humidity to prevent glaze crazing or peeling.

3. Environmental Fluctuations: Sudden changes in humidity can be more harmful than consistent levels. A controlled environment with minimal variation is crucial.

4. Storage Location: Avoid basements or attics where humidity fluctuates drastically. Climate-controlled display cases or museum-grade storage are ideal.

5. Long-Term Preservation: Silica gel packets or dehumidifiers can help maintain stable humidity, especially in humid climates.

By understanding these factors, collectors and museums can ensure the longevity of porcelain sculptures while preserving their intricate beauty.