Concrete Acid StainSemi-Transparent Professional Grade Cement Stain (1 Gallon, Brown Stone) Professional Grade Acid Stain Easy to Use with Tech Help Available UV Stable Cement Stain Great for your Interior and Exterior Projects Elegant Variegated Translucent Effect Gives Natural Look Not Painted 1 Gallon Size Covers 100-200sq ft Depending on dilution, texture and porosity of the concrete. Acid Stain Physically Changes the Color of Your Concrete. Ensures No Bonding Issues