Slows the drying process of Atelier Interactive Professional Artists' Acrylic. It's creamy consistency can be used to spread and dilute paint wirthout becoming runny.
Thin paint usually dries fastest. This medium keeps thinly painted areas workable. When a water spray is used to replace moisture, the medium remains active during a painting session, so that a balance needs to be considered between using more and more medium, or using the spray to keep the first application 'alive'.