Women's underwear becomes stained for a variety of reasons. Luckily, most body fluid and substance stains are easily removed from foundation garments with a minimum of fuss. When faced with a stain, however, fast action is best; if the offending substance penetrates fibres deeply enough, it will leave a lasting impression. Here is a short primer on different stains that can be found on ladies underwear, and how to remove them.
Act quickly to pretreat and remove body stains. Because many body fluid stains contain protein, they can leave a permanent mark in very little time. Try not to rub or agitate the stain, if at all possible.
For menstrual blood stains, simply run the spot under cool water. According to Mrs. Clean housecleaning specialists: "Blood dissolves easily in water--cool or cold water. Don't use hot water as it will cook the blood and you may never be able to get it out." While it's under the water, rub it to remove the stain even more.
If the blood stain still won't come out, allow the underwear to soak in cold water for about an hour, followed by laundering in cold water. Follow this with 1 tbsp of meat tenderizer and 2 tsp of cold water on the spot; leave it to sit for about an hour, then launder again. You also may try hydrogen peroxide to remove the blood stain if meat tenderizer isn't available.
For faeces stains, soak the underwear in warm water and a detergent that has enzymes. Follow this with a wash that includes chlorine bleach if the fabric is bleach-safe. If not, use oxygen colour-safe bleach.
If the stain isn't completely out of the underwear, resist tumble drying until the stain is gone. Heat will cook the substance into the fibres, making it practically impossible to budge, even with bleach.