Removing bleach stains from clothes can be challenging, especially if they have been there for a long time. However, you can try the following methods to potentially improve the appearance of the stains:
Lemon Juice: Lemon juice can sometimes help lighten bleach stains. Squeeze fresh lemon juice onto the stained area and rub it gently. Allow it to sit for a few minutes before rinsing with cold water. Repeat the process several times if necessary, and then wash the garment as usual.
Vinegar: White vinegar is known for its stain-removing properties. Mix equal parts white vinegar and water, and apply the solution to the bleach-stained area. Let it sit for a few minutes, then rinse with cold water and wash the garment as you normally would.
Sodium Bisulfite: Sodium bisulfite is a reducing agent that can be effective in treating bleach stains. Dissolve a small amount of sodium bisulfite in water, and apply it to the stained area. Allow it to sit for about 15 minutes, then rinse thoroughly with cold water and wash the garment.
Commercial Color Remover: You can also try using a commercial color remover product specifically designed to treat bleach stains. Follow the instructions on the product carefully, as different brands may have specific guidelines for usage.
Please note that these methods may not completely remove the bleach stains, especially if they have set into the fabric over a long period. Additionally, it's always a good idea to test any stain-removal method on a small, inconspicuous area of the garment first to ensure it doesn't cause any further damage or discoloration. If the stains are extensive or persistent, it may be challenging to restore the original appearance of the clothes, and professional help from a dry cleaner or textile restoration specialist might be necessary.