Wood oil is a finishing product designed to nourish and protect wood from within. Instead of creating a hard surface layer, it penetrates deeply into the wood fibers, enhancing the grain and preserving a natural matte or semi-matte appearance. Because the wood remains open-pored, it can regulate moisture more naturally. Varnish, by contrast, forms a hard film on top of the surface. This film provides strong resistance against scratches, water, and chemicals, often with a higher gloss level. However, once damaged, varnished surfaces usually require full sanding and refinishing. The choice between wood oil and varnish ultimately depends on whether the priority is natural appearance and easy maintenance or high-gloss, film-based protection.