Resin finishes without doubt form the peak of all special effects on jeans. A variety of fashionable statements, especially in the field of dark denims, demand the most varied treatments in connection with synthetic resins– the "resin finishes".

From bleach resist effects, mostly from localised spray bleach treatments, through to three-dimensional effects like the classic crease fixing or also coloured resin treatments for vintage and antique looks. These are mainly spray finishes with synthetic resins on finished jeans, or synthetic resins mixed with other suitable binder systems.

Synthetic resins used in jeans finishing are mainly two types of resin with differing properties:

The most commonly used types are quite definitely the glyoxal types.
Completely formaldehyde-free resins are also available. In addition, glyoxal resins mixed with special acrylate or polyurethane-based binder systems are often used in spray applications for fashionable effects on jeans – "soft resin finish".