sentences:  Winsor & Newton suggests the use of Liquin as a "fat" or "flexible" agent, to increase the flexibility subsequent layers.While Liquin "Original", and Liquin "Light Gel Medium" are mixtures of petroleum distillates, Liquin "Oleopasto", and Liquin "Impasto" are mixtures of alkyd resin and petroleum distillates.Notably, it is used to speed the drying time in oil painting, though it may also be used as a barrier layer to achieve some effects.