The new oils were developed to be used with water in the place of turpentine, mineral spirits or other solvents! The vegetable drying oils have been restructured in water soluble oils which eliminate yellowing. Like traditional oils, water soluble oils must dry through oxidation - absorbing oxygen through the air. Once dry, they are just like any other oil painting and should be treated as such. Like traditional oils, water soluble oil paintings cannot be reactivated with water when dry.