Snot Effect Demo Dirty Down: Snot Effect creates clear spittle and strands right out of the pot. Dip your tool then touch to a model or prop. Vary the amount of goop to create thin or thick strands for a disturbingly realistic look. Mix in any color to create a custom shade.Keep bottle sealed when not in use. Use in well-ventilated area. See Peel-Back label for full health and hazard information.