Artisan Flat Matte Sealer is a non-yellowing and hardwearing polyacrylic sealer. Perfect to use on high traffic areas and table tops as a hardwearing protective top coat to previously chalk or milk painted pieces. It can be used to seal decoupage or image transfer to provide a waterproof protective top coat. Use it to seal Artisan Real Rust, Instant Age, Glaze and more! Perfect to seal lighter to mid tone chalk and milk paint colours as it can give a slightly cloudy appearance to darker colours.