Why is dewaxing important before repairing nicks?

Dewaxing is an essential step before repairing nicks because it ensures better paint adhesion. When a surface is waxed, any wax residue can create a barrier that prevents paint from directly bonding with the substrate. This can lead to poor adhesion, which may result in peeling, chipping, or a patchy finish once the repair is complete. By removing the wax, the surface is properly prepared, allowing the paint to adhere effectively and providing a more durable and aesthetically pleasing repair.

The other options relate to different aspects of the painting and repair process. While promoting higher gloss and reducing drying time are beneficial outcomes in some contexts, they are not the primary reason for dewaxing. Enhancing structural integrity also does not pertain to the need for dewaxing, as this step focuses more on surface preparation than on the physical strength of the materials being repaired.