Rust EFFECT spray creates the illusion of rust and oxidation. Ideal for hobby, DIY or creative projects. Apply as a single color, or together as desired for an organic look. Use on different surfaces such as paper, cardboard, primed canvas, wood, glass, metal, ceramics, porcelain, stone, acrylic and other paintable materials. The rust effect is created by a nitro-combi formulation that mimics the appearance of oxidized iron. Can be top coated and combined with Montana GOLD, Montana ACRYLIC markers, and acrylic paints once completely dry. Pre-priming is required for application on polystyrene (Use Montana Styrofoam primer and make sure to seal the surface completely).