The duration required for oil paints to solidify sufficiently to allow for overpainting or varnishing is a crucial consideration for artists. This process, distinct from simple evaporation, involves oxidation and polymerization of the oil binder. The resulting film must be touch-dry and possess adequate structural integrity for subsequent layers or protective coatings.
Understanding this timeframe is paramount for efficient workflow and archival stability. Premature application of varnish can trap solvents and impede complete curing, leading to potential cracking or yellowing over time. Historically, mastering the nuances of drying times was a fundamental aspect of traditional painting techniques, influencing both artistic style and conservation practices. It directly impacts the longevity and visual integrity of finished artworks.