Oil paints are among the simplest paints, yet they have exceedingly complex drying properties. Oil paints consist of a binder—a drying vegetable oil—and pigment. Pigments are solid colorants suspended in vegetable oil—commonly linseed oil. Vegetable oil gives oil paint its slow-drying properties, highly prized by artists even today. Commercial oil paints may contain other ingredients, such as extender pigments, pigment stabilizers, and driers.