The basics Fleet Street Dirtworks Grime Sprays are a coordinated system of colored sprays that are matched to the Skin Illustrator Grunge Palette.  The benefits Fleet Street Dirtworks Grime Sprays are the safest dirt on the market, as they do not contain any hazardous ingredients such as talc, silica or walnut shells. Removes very easily with soap & water The uses Use alone or with the Dirtworks Dirt to create a variety of "dirty" makeups. Use Dirtworks Dirt-Tac when only a powdered look is required. Dirt-Tac also helps hold the powders in place. The bottom line Safe to use on skin as a makeup or on costumes, fabrics and scenery.