Shellac is a natural resin with a low melting point, commonly used in photographic processes such as dry mounting. It acts as an adhesive layer, helping to secure prints or photographic materials to mount boards without damaging the image.
In photography and print finishing, shellac provides a stable, durable bond while allowing controlled application and easy handling. Its use ensures that mounted prints remain flat, protected, and visually appealing, making it a valuable material in darkroom and archival practices.