This Liquin Impasto medium from Winsor & Newton is for use with oil paint. It is a quick drying, semi-gloss medium which thickens slowly & extends tube colour retaining crisp textures & brush marks without any visible leveling. It can become touch dry within one to six days, depending on the colour and film thickness. Resists yellowing. It has a semi-gloss appearance and can also be used to thicken and extend tube colour whilst retaining crisp textures and brush marks without any visible leveling. Not suitable as a varnish or final coat.