Zinsser® B-I-N® Shellac-Base Primer-Sealer is a high-performance, white pigmented shellac-based primer, sealer, stain blocker, and bond coat. It delivers fast dry time, excellent adhesion, and powerful stain blocking, making it ideal for a wide range of interior applications.This primer is suitable for use on new or previously coated wood, plaster, drywall, filled areas, porous wallcoverings, and paneling. It adheres to almost any surface, including clear finishes, glass, ceramic tile, metal, Formica®, and MDF—ensuring reliable topcoat bonding across difficult substrates.The solvent has a mild, quickly dissipating odor, making the product appropriate for use in non-occupied areas of hospitals and schools. It is also well-suited for commercial and residential environments such as retail shops, restaurants, apartments, food processing plants, walk-in refrigerators, and more.