Specially formulated to enhance the characteristics and usability of Artisan Water Mixable Oil Colors, this slow drying medium is designed to help when painting in layers to maintain the "fat over lean" rule. The most commonly used oil medium, linseed oil reduces consistency and improves paint flow while increasing gloss and transparency and, like all Artisan mediums, it can be easily cleaned up with water. Details:75 mL (2.5 fl. oz.) bottleAP certifiedFor use with Artisan Water Mixable Oil Colors