Heidi Swapp-Minc Reactive Paint Medium. Paint a thin layer of medium on rubber stamp designs, stamp onto the surface to be foiled, allow to dry and run it through a Minc machine (sold separately). The foil will adhere to the designs. Also great for use with stencils and templates. This package contains 3oz of reactive paint medium. Acid free. WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Do not mouth or chew. Made in USA.