I Pulled Out Shoes I Hadn’t Worn All Winter… and Found White Fuzzy Patches Growing on the Leather. What Is This?

explore exactly what these patches are, why they appear, how to identify them correctly, and how to save your shoes before permanent damage occurs.

Why White Fuzzy Patches Appear on Leather Shoes

Leather may seem tough and durable, but it’s actually a natural material.

Unlike plastic or synthetic fabrics, leather contains proteins, oils, fats, and other organic compounds that remain even after the tanning process.

These compounds make leather flexible and comfortable.

Unfortunately, they also make it attractive to mold.

When leather shoes are stored in:

  • Damp closets
  • Basements
  • Garages