Winsor & Newton Artists’ Painting Medium is a multi-purpose medium for use with oil colours. It thins, improves flow, slows drying and strengthens the film; it also improves fine details, helps glazing and allows you to build smooth areas. It’s also suitable for oiling out – evening levels of gloss on a touch-dry canvas by applying with a lint-free cloth. Winsor & Newton Artists’ Painting Medium dries without yellowing. UK shipping by road only. Not available for International or Northern Ireland delivery.