If the fabric doesn’t have a label for care and washing, test a small area of the fabric with whatever cleaning products you plan to use, to see how the fabric reacts to your intended cleaning products and practices.
Fabrics like silk, suede, velvet, and rayon should be taken to a dry cleaner. You shouldn’t try to wash these fabrics yourself for risk of ruining the fabric.
Pre-treating a stained fabric as soon as possible is one of the most critical steps in stain removal. [5] X Research source The sooner the stain can be treated with a pre-treatment, the more likely your chances are of removing the stain. Do not use on silk or wool, since enzymes digest protein. An alternative stain remover is Borax. If you use Borax, cover the stain completely, let it sit for 30 minutes, and continue to wash the fabric.
Make sure that the stain is completely removed before you put the fabric in the dryer. The heat from the dryer could set the stain permanently if it isn’t completely removed during the washing process. Consult the garment label for details on the recommended washing settings for the fabric.
Try not to rub the stain, but rather use light blotting motions, blotting from the center of the stain to the outer edges. Repeat this step until the banana stain disappears.
If the spot or stain turns brownish when the fabric is dried, consider mixing 1 part white vinegar and 2 parts water, and applying it to the stain. [10] X Research source Apply a small amount of the vinegar solution, blot the stain, and allow the area to dry. Repeat this step only once, and then try blotting the fabric again with clean, cool water.