For use with artists' oil colors where a matte finish is desired. Especially useful for under-painting on an absorbent gesso ground or mural work. Does not affect the brilliance of even the most subtle tints. Add to oil color in small quantity. Increases fluidity. This product may be diluted with either Pure Gum Spirits of Turpentine or Grumtine™. Odorless Paint Thinners or petroleum solvents are not compatible with this product.