These sets feature professional grade acrylic inks that are extremely fluid so there is no need to dilute for use. They are fast drying, water resistant, non-clogging and permanent. The superfine pigments are suspended in a state-of-the-art acrylic emulsion to provide rich color. All inks are intermixable with the other Liquitex acrylics and mediums. Ideal for airbrushing, watercolor effects and screen-printing. The 6-Color Essentials Set includes napthol crimson, yellow medium azo, phthalocyanine blue (green shade), carbon black, titanium white and transparent raw umber.