Our Luminescent Acrylics include three types of unique colors: Interference, Iridescent and Pearlescent pigments—all made with the same care and emphasis on quality as our other Daniel Smith products. The Luminescent colors are smooth and creamy, formulated with pigments developed by modern technology. Our acrylics are made with 100% acrylic emulsion, contain no fillers or extenders, and are completely lightfast. Lightfastness Rating: I *** For information on Lightfastness Ratings click here.***