Derivan Screen Drawing Fluid Medium is the first part of a two part silk screen paint system. Use the Derivan Drawing Fluid Medium with a brush or directly from the bottle onto the silkscreen to create a hand-painted design. Screen-printing with the water-based Derivan Screen Printing Stencil System is a non-toxic process. It makes creating your hand-drawn prints a breeze. This straightforward process is ideal for all ages, perfect for the art studio, classroom or dining table.