These water-based screen printing inks are specially formulated to allow the user to have greater open time in the screen. This feature provides flexibility for the user to work with more colors without the ink drying in the screen, and provides for higher resolution printing without fear of clogging screens. They are archival, lightfast and permanent on most surfaces including fabric, paper, plastic, vinyl, leather, metal and more. Fabrics must be heat-set for permanence and durability. Once set, the inks are fully washable and dry-cleanable on all natural and synthetic fabrics. It won t wrinkle paper when printing artwork. Since it water-based, no smelly solvents are required and clean up is easy with just soap and water.