Work carefully, but quickly. Wet as little of the fabric as possible with the stain remover. If at all possible, try normal washing with household detergent immediately after rinse with cool water. Test for color change on a sample of the fabric, a piece of the hem or other unexposed area before using any stain remover . Use removers sparingly.
Many brief applications are better than one of long duration.
Use light brushing motions. Never let the removers dry. When using a liquid remover, spread unevenly into the fabric around the stain and then brush gently into it. Dry rapidly to help prevent rings. After stain removal, launder or dry clean the garment, if possible.