First trick. Neutralizing the bleach
This method works best on fresh or lightly faded bleach stains.
You will need 250 milliliters of room temperature water and one tablespoon of sodium thiosulfate. Sodium thiosulfate is often sold in photography supply stores or pharmacies and is commonly used to neutralize chlorine.
Mix the water and sodium thiosulfate until it dissolves completely. Pour the solution directly onto the bleach stain, making sure the area is fully saturated. Allow it to sit for several minutes so the chemical reaction can stop the bleaching process. After that, rinse the garment with cold water and wash it normally. Avoid rubbing the fabric, as rubbing can damage weakened fibers and spread discoloration.
Many people notice that the stained area becomes significantly less visible after this treatment, especially if the bleach exposure was recent.
