You should remove blood stains from your clothing as soon as they get stained. The proteins in the blood make the stains especially problematic. Enzymes are efficient in breaking up organic matter, so enzymatic detergents are recommended in these cases. You should never use warm water or any other type of heating source on a blood stain. When heated, the proteins in the blood leave a permanent mark. There are several ways in which you can get rid of a blood stain. For instance, you can use salt or saliva. However, if the stain is larger and you are looking for a safer solution, you should wash the piece of clothing appropriately.
Step 1 – Absorb the Blood
As soon as you stained the fabric, press a white cotton rag or paper towels on the stain. The cotton rag is preferable because it has better absorbent properties. Try to absorb as much blood as possible to prevent it from spreading and making a larger stain.
Step 2 – Check the Composition of the Clothes
Find the label on the piece of clothing and carefully read the washing instructions and composition. In case of wool, silk, linen or dry-clean only clothing, you shouldn't proceed. Take the piece of clothing to your dry cleaner as soon as possible. You should not attempt cleaning the stains yourself because whatever pretreatment you might apply could permanently damage the material and the dry cleaner might not be able to remove the stain.
Step 3 – Use Detergent and Hydrogen Peroxide
In a small bowl, mix together 1 teaspoon laundry detergent and 1 cup of hydrogen peroxide. Soak a clean sponge or a clean white piece of cloth in the bowl. Wring out the sponge halfway, and rub it against the stain. You may also scrub the stain with your hands.
On white clothing, you can pour hydrogen peroxide directly on the stain. Make a mixture with 50 percent water. When you put hydroxide peroxide on a blood stain, it will start foaming. When it stops foaming, it means either that the stain is removed or that the fabric is very wet and needs wringing.
Step 4 – Soak in Sparkling Water
When you are done rubbing the clothing with hydrogen peroxide or detergent, put it in sparkling water. Let it soak for about half an hour.
Step 5 – Wring the Clothing
Wring the clothing and inspect the stained area in the light (preferably sunlight). The stain might be completely gone or it might still be a little yellowish.
Step 6 – Wash Clothing
Wash your clothing. If it can be machine-washed, set a low water temperature. In case it needs hand-washing, use a gentle detergent and cold water.
Step 7 – Air Dry
Let your clothing air dry. Do not use the drier; if the stain did not completely come out, heat will make it permanent and you will never be able to wash it out.