What is Acrylic Medium and What is it Used For? Acrylic medium is a chemical product used in the field of art and decorating to mix with acrylic paint and modify its properties. Some common uses of Acrylic Medium include: Diluting the acrylic paint: You can mix with acrylic paint to dilute it and make it more fluid, which makes it easier to apply and blend. Increasing transparency: By mixing with acrylic paint, you can increase its transparency and make it more transparent, which is useful for creating layering or overlaying effects. Modifying consistency: Acrylic medium can be used to modify the consistency of acrylic paint, making it thicker or thinner as needed. Modifying consistency: can be used to modify the consistency of acrylic paint, making it thicker or ...