Dirtworks Powders and Sprays are the safest dirt makeup products on the market. They also blend well with all the Skin Illustrator Palettes and Liquids, Glazing Gels and Glazing Sprays. The Dirtworks Powders are best applied when using the Dirtworks Dirt Bag. Use Dirtworks Dirt-Tac when only a powdered look is required. Dirt-Tac also helps hold the powders in place.