Rustins Quick Dry Polyurethane Varnish A water-based, non-yellowing polyurethane varnish that is tough and durable and will resist cracking, peeling and blistering. Can be used on bare wood, hardboard, MDF, unsealed cork. For interior and exterior use. Long lasting wood protection For all types of interior and exterior wood Low odour & non toxic Enhances the beauty of wood Resists alcohol & boiling water Clean brushes in water