Cover Stain Oil-Based Primer - 16 oz is a versatile primer that bonds and seals wood, masonry, drywall, and all porous surfaces both indoors and outdoors. It adheres to all surfaces without requiring sanding and can even spot seal watermarks. With its ability to hide stains and tough substances like graffiti, ink, and crayons, this primer is an ideal choice for those hard-to-cover areas. Plus, it dries quickly, allowing you to topcoat with any paint in just 30 minutes. Available in a 16 oz size and a white color for your convenience.