The product is a green stain/sealer product formulated for exterior use on properly prepared, composite decking and railings. Engineered specifically to eliminate water absorption and protect against mold and mildew.
Decks, Railings, Boardwalks, Outdoor Furniture
"Applying his extensive knowledge of chemistry, Mike created a unique polymer using nanoparticles that had the ability to easily penetrate the wood, creating a clear flexible film that was not only waterproof from the surface, but also breathable and impervious to salts and chlorides." The company home page also references "unique polymer nanoparticles" used for their Seal-Once brand.