Revitalize your old porch or walkway with an acid stain. Beautiful results, unique natural patterns. With vibrant green and blue, glossy black and brown, or deep red and yellow, your guests won’t believe its plain old concrete. The acid reacts differently with every patio giving your concrete a unique and unforgettable new life. After stain we like to add a few coats of glossy sealant to really make your new surface shine.