Winsor & Newton has its own range of water-soluble mediums specifically for use with Artisan Water-Mixable Oils. Specially formulated mediums ensure that traditional oil painting techniques can be achieved without using solvents such as turpentine or mineral spirits. This UV resistant gloss varnish provides protection for paintings achieved with Artisan Colour and is removable with Artisan Varnish Remover. Non-yellowing.Painting must be completely dry (6-12 months).Use only as a final varnish. Shake well before use. Conventional oil mediums can be mixed with Artisan but negate the water-soluble quality of Artisan, simply making it an oil paint. At this point, use of Artisan water-soluble mediums is not recommended for use with traditional oils.