Brickform Blush-Tone Acid Stain reacts with minerals that exist in newly cured or existing concrete. It penetrates the very top layer of the concrete with colour that will not chip, crack, or peel. The colours produced by concrete acid stain are unique in each section with captivating, multi-colored intensities that become a permanent part of the concrete. Brickform Blush-Tone Acid Stain is available in 10 standard colours.