L'ESSENTIEL Crystal Clear 500ml topcoat is a satin finish acrylic resin topcoat that cures within 7days. It is non yellowing, has an inbuilt uv protectant making it suitable for exterior use. It can be used to seal painted furniture projects and raw timber, giving a durable impervious coating. This is a great product to seal your kitchen and bathroom projects also. Crystal clear contains a tannin blocker, and can be used to seal areas of tannin bleed, before painting your pieces.