Multi surface sealer is a pure acrylic medium with remarkable adhesive powers. It is a durable, versatile surface sealer that can be used to seal most surfaces for painting. Included are wood, tin and other metals, glass, unglazed bisque, terracotta, cards, paper and fiberboard. Mix with color for a one-step base coat. All-purpose sealer will promote paint adhesion to unusual surfaces such as soaps and candles. Light sanding is recommended to promote paint adhesion to any surface.