Available for exterior and interior use, including polishing, Dye-namic dyes are manufactured with UV-resistant colorant designed to penetrate open concrete surfaces, including polished concrete. Available in 20 colors, the dyes may be used alone, combined, or applied over one another to create multicolored, variegated, and unique designs in a third of the time compared to reactive-acid or water-based stains. Available in concentrated packages that make 1 qt., 1 gal., and 5 gal. The Stamp Store. 888-848-0059. www.thestampstore.com