DEFY 1 Gallon Wood Brightener RESTORES THE NATURAL BEAUTY OF WOOD  DEFY Wood Brightener cleans and restores weathered wood surfaces to make them look new again. REMOVES RUST STAINS AND TANNIN STAINS CAUSED BY FALLEN LEAVES  This product excels at removing rust or tannin stains from wood surfaces and is recommended for all species of wood including redwood. NEUTRALIZES WOOD STAIN STRIPPERS AND CLEANERS  This product brings wood surfaces back to a neutral ph, after using alkaline wood cleaners and stain strippers. This creates an ideal surface ready to be stained. Wood cleaners and stain strippers that arent completely rinsed and neutralized can cause premature stain failure. IMPROVES ABSORPTION OF WOOD STAINS  In addition to brightening and neutralizing the surface, DEFY Wood Brightener also helps to open the pores of the wood, allowing for maximum absorption and longevity of DEFY Wood Stains. CONCENTRATE MAKES 5 GALLONS  This economical 1 gallon concentrate can be mixed with 4 gallons of water to treat between 500-1,000 sq. ft. of surface area.