In oil painting, how is paint traditionally applied?

In oil painting, the traditional method of applying paint involves layering techniques that prioritize the use of least oily layers at the bottom. This is known as the "fat over lean" technique, which helps to ensure proper adhesion and drying of the paint. The lean layers are thinner and less oily, allowing them to dry more quickly, while the fattier layers, which are more pigmented and contain more oil, are applied on top to create depth and richness in the final artwork.

This layering approach is essential because it prevents issues like cracking or uneven drying. As the oil paints dry, the lower layers need to dry before the heavier, more oily layers are added. This technique also contributes to the texture and luminosity of the artwork, as each layer builds upon the previous one, allowing for a complex interplay of colors and textures.