For protein-based fabrics like wool, silk, and cotton, try applying a mixture of equal parts water and white vinegar directly to the stain. Gently blot the area with a clean cloth, then let it sit for about 10 minutes before rinsing with cold water. If the stain persists, repeat the process a few times until it fades away. On synthetic fabrics like polyester, nylon, or spandex, use a solution of 1 part baking soda to 2 parts water to create a paste. Apply the paste to the stained area and let it sit for about an hour before washing as usual. For delicate fabrics like lingerie or activewear, consider using a stain removal product specifically designed for these types of materials.