Zinsser® Bulls Eye Zero® 1-2-3 is a high-performance, water-based primer and sealer formulated for interior and exterior use. Designed to meet clean air regulations, it delivers the performance of an oil-based primer without the strong odor or solvent emissions. It offers excellent adhesion, stain blocking, and enamel holdout, making it ideal for residential, commercial, and institutional applications including schools, hospitals, hotels, and more. Suitable for a wide range of surfaces including wood, drywall, masonry, metal, tile, PVC, fiberglass, and previously painted surfaces.