Watch and learn how to restore the natural beauty of your exterior wood surfaces with our powerful oxalic acid-based deck brightener. Our liquid concentrate effectively neutralizes and brightens exterior wood surface to make the surface ideal for staining. Not only that, but it removes tannin and leaf stains. Use DEFY Wood Brightener as the second step after DEFY Wood Cleaner, or DEFY Stain Stripper to prepare your wood for clear and semi-transparent finishes and stains. For more information, visit our website at defywoodstain.com.