Simply brush these patinas on metal coatings directly or on your cleaned surface --polymer clay, metal, plaster, resin, wood, ceramic, paper....just about anything. Apply one coat, let it dry (about 5-15 minutes); apply a second coat, and then add the patinas while the coating is still moist. Apply to metal coating while still moist. Patinas can take time to bloom and can continue to react for up to 24 hours. Generous 2 ounce bottle; I like to apply the coatings with a bit of sponge. Ships Parcel Post in US. Due to postage regulations, CANNOT SHIP OUTSIDE THE USA. Using gloves with this product is recommended! Tiffany Green Rust.