Acrylic medium is a versatile product for use with acrylic paint and in mixed-media projects. A liquid that’s milky when wet and translucent when dry, it can be added to acrylic to increase fluidity; ...

Acrylics, because they are water-based, can be thinned with water to create transparent washes. But the pigments don’t tend to adhere very well once this is done, which is where glazing media come in.