A package of wood bleach contains two bottles, usually labeled “A” and “B.” One contains lye (sodium hydroxide) and the other peroxide (hydrogen peroxide). The bleaching action occurs when the two chemicals come together in contact with wood.
Second, brush-on Woodbleach Component B over the same treated area. Allow to dry approx. 24 hours to complete chemical process and to evaporate moisture from the woodboard.
Oxalic acid has many uses, but it is widely used as a wood bleach because it removes stains without removing the natural color of the wood. It can be used on spots on furniture, like dark water marks, and it can be used to remove stains from larger areas of wood like floors and decks. Oxalic acid is toxic and should be used with care. Use eye protection, rubber gloves and protective clothing when using oxalic acid and dispose of it according to directions. If used properly, oxalic acid is highly effective in renewing wood to a beautiful natural state.