Foxing
Definition: Foxing is a form of discoloration that appears as reddish-brown spots or blotches on paper-based artworks, books, or prints. It is typically caused by mold, metal contaminants in the paper, or prolonged exposure to humidity and poor environmental conditions.
While foxing does not always structurally damage the paper, it can significantly impact an artwork’s visual quality and market value. Conservation treatment may involve chemical reduction, cleaning, or environmental stabilization to halt further development.
Collectors are advised to store works on paper in archival frames, low-humidity environments, and away from direct sunlight to minimize the risk of foxing and other forms of deterioration.
