So I did a small area of my patio and loved they way my stamped concrete looks. Prior to using this product the concrete looked old and dingy and was starting to show wear areas. This sealer has brought my patio back and has a really nice sheen. It sealed the concrete so its ready for the winter weather. I tried a different product and that product turned my concrete yellowish. AR500 did not discolor my concrete. I can't wait to do my whole patio next spring.