Oil paint can be used straight from the tube, but various additives allow you to adjust its properties to suit your painting technique. An additive can make the paint thinner or thicker, affect its drying time and sheen, and help create anything from thin glazes to textured layers of paint. The choice can seem rather complicated at first. Faced with shelves of oils, alkyd mediums, solvents, drying agents and varnishes, it can be difficult to know which product you need in a particular situation. In this Oil Painting 101 article, we introduce the main types of oil painting additives and explain the role they play.
