This medium allows for mixing oil colours with water instead of turpentine or turpentine substitute. Increases gloss and transparency; harmonizes drying process; odourless. Shake before use. Mix 2 parts of oil colour and 1 part of medium W on a palette, than add water like you want; if necessary add more medium W. Painting tools can be cleaned with water. There is no change of the product quality based on the color change of the raw material alkyd resin. Dosage: 50%. Thinner: water. Contains: alkyd resin.