One of the most popular ways to give concrete a decorative accent is, simply, to stain it. Both new and old concrete can be stained, and stains can be combined for unique effects.

There are several different kinds of stain to choose from, each with its own strengths and drawbacks. Acid stains contain metallic salts and hydrochloric acid. The acid roughs up the surface so the salts can work their way deeper into the concrete, where they react chemically with hydrated lime. Acid stains generally come in earth tones.

While acid stains are irreplaceable tools for concrete artists, other stain options offer a broader range of colors and are easier to work with. They include water-based stains and water-based and solvent- based concrete dyes.