I pulled out shoes I haven’t worn all winter and found white fuzzy patches growing on the leather. What is this?.

Why White Fuzzy Spots Appear on Stored Leather Shoes—and How to Deal With Them Safely
Posted onFebruary 7, 2026 ByadminNo Commentson Why White Fuzzy Spots Appear on Stored Leather Shoes—and How to Deal With Them Safely
Taking leather shoes out of storage and discovering pale, fuzzy patches can be unsettling, especially when they looked fine before being packed away. This situation is surprisingly common and is usually linked to moisture buildup and limited airflow during storage. Leather is a natural, porous material, so when conditions are damp or stagnant, surface growth…

Taking leather shoes out of storage and discovering pale, fuzzy patches can be unsettling, especially when they looked fine before being packed away. This situation is surprisingly common and is usually linked to moisture buildup and limited airflow during storage. Leather is a natural, porous material, so when conditions are damp or stagnant, surface growth can appear. In most cases, this is manageable with gentle care and improved storage habits rather than a sign the shoes are ruined.

These white or powdery areas are most often mold or mildew that formed while the shoes sat unused. Both develop in humid environments and can look fuzzy, dusty, or slightly chalky, sometimes with a musty odor. It’s also worth noting that not every white mark is mold—salt residue from winter wear tends to appear in streaks and feels crusty rather than soft. Knowing the difference helps determine whether simple wiping or more careful cleaning is needed.