How to Remove Old Blood Stains from Clothes Without Damaging the Fabric

You have old blood stains on your clothes. Maybe you didn’t notice the stain until after the clothes went through the dryer. Or maybe you treated it once but it didn’t come out. Old blood stains have set, but they can still be removed. Blood is a protein stain, and the key is breaking down the proteins with cold water, hydrogen peroxide, and enzyme detergent. Here’s how to remove old blood stains from clothes without damage.

Old blood stains on clothes are blood that has bonded with fabric fibers and been set by dryer heat. Blood is a protein stain, which means hot water can set it permanently. Removing old blood stains requires cold water, an enzyme detergent, hydrogen peroxide, and oxygen bleach to break down the set-in proteins.

To remove old blood stains from clothes, soak in cold water with enzyme detergent for 30 minutes to 1 hour, apply hydrogen peroxide for 5 to 10 minutes, spray with OxiClean, wash in cold water, and check before drying. Don’t use hot water, don’t rub, and don’t put the clothes in the dryer until the stain is gone.

Step-by-Step: Removing Old Blood Stains

Step 1: Soak in Cold Water with Enzyme Detergent

Fill a tub with cold water and add 2 tablespoons of Tide Free and Gentle. Submerge the clothes and soak for 30 minutes to 1 hour. The enzymes break down the blood proteins.

Step 2: Apply Hydrogen Peroxide

Remove the clothes from the soak. Apply 3% hydrogen peroxide directly to the stain. It will bubble as it breaks down the blood proteins. Let it sit for 5 to 10 minutes. Test on colored fabric first, as hydrogen peroxide can lighten some dyes.

Step 3: Apply OxiClean (For Stubborn Stains)

Spray with OxiClean Max Force Spray. Let it sit for 10 minutes. The enzymes in OxiClean break down organic matter.

Step 4: Apply Baking Soda Paste (For Extra Power)

Mix Arm and Hammer Baking Soda with water to form a paste. Apply to the stain, let it sit for 30 minutes, then rinse with cold water.

Step 5: Wash in Cold Water

Wash with Tide Free and Gentle in cold water. Add half a cup of baking soda for extra cleaning.

Step 6: Add Vinegar to the Rinse

Add half a cup of white vinegar to the rinse to remove any remaining residue.

Step 7: Check Before Drying

Check the stain before putting the clothes in the dryer. If the stain remains, treat again and re-wash. Don’t put the clothes in the dryer until the stain is gone.

Alternative Method: Meat Tenderizer (For Very Stubborn Stains)

Meat tenderizer contains enzymes that break down proteins.

Step 1: Make a paste. Mix meat tenderizer with water to form a paste.

Step 2: Apply to the stain.

Step 3: Let it sit for 30 minutes.

Step 4: Rinse with cold water.

Step 5: Wash in cold water with enzyme detergent.

Alternative Method: Ammonia (For White Cotton Only)

Step 1: Mix ammonia solution. Mix 1 tablespoon of ammonia with 1 cup of cold water.

Step 2: Apply to the stain.

Step 3: Let it sit for 5 minutes.

Step 4: Rinse with cold water.

Step 5: Wash in cold water.

Note: Don’t use ammonia on wool or silk. Don’t mix ammonia with chlorine bleach.

Old Blood Stains on Different Fabrics

Fabric	Best Treatment	What to Avoid
White cotton	Cold water + hydrogen peroxide + oxygen bleach	Hot water
Colored cotton	Cold water + enzyme detergent + OxiClean	Hot water, chlorine bleach
Polyester	Cold water + enzyme detergent	Hot water, hydrogen peroxide (may lighten)
Denim	Cold water + OxiClean	Hot water
Mattress	Cold water + hydrogen peroxide + blot	Soaking
Silk	Professional cleaning	All home treatments
Wool	Cold water + gentle detergent	Hot water, enzymes

What Not to Do

Don’t use hot water. Hot water sets blood stains permanently by cooking the proteins. Always use cold water.

Don’t put blood-stained clothes in the dryer. Dryer heat sets blood stains permanently. Always air dry and check first.

Don’t rub the stain. Rubbing spreads the blood and damages fibers. Press gently.

Don’t use chlorine bleach on colors. Chlorine bleach strips color. Use hydrogen peroxide or oxygen bleach instead.

Don’t use warm water. Even warm water can set blood stains. Use cold water only.

Don’t use fabric softener. It coats fibers and traps the stain.

Don’t give up after one treatment. Old blood stains may need 2 to 3 treatments to fully remove.

Don’t mix ammonia and chlorine bleach. Mixing them creates toxic gas.

FAQ

How do you remove old blood stains from clothes? Soak in cold water with enzyme detergent for 30 minutes to 1 hour, apply hydrogen peroxide for 5 to 10 minutes, spray with OxiClean, wash in cold water, and check before drying. Repeat if needed. Don’t use hot water.

Can you remove blood stains that have been through the dryer? Yes. Soak in cold water with enzyme detergent for 1 hour, apply hydrogen peroxide, spray with OxiClean, wash in cold water, and check before drying. You may need 2 to 3 treatments.

Does hydrogen peroxide remove old blood stains? Yes. Hydrogen peroxide breaks down blood proteins. Apply 3% hydrogen peroxide to the stain, let it bubble for 5 to 10 minutes, rinse with cold water, and wash. Test on colored fabric first.

Does cold water remove old blood stains? Yes. Cold water is essential for blood stains, even old ones. Hot water sets blood permanently. Soak old blood stains in cold water with enzyme detergent before washing.

Can you put blood-stained clothes in the dryer? Don’t put blood-stained clothes in the dryer until the stain is completely gone. Dryer heat sets blood stains permanently. Always air dry and check first.

References

1. Tide. “How to Remove Old Blood Stains from Clothes.” tide.com.
2. The Spruce. “Blood Stain Removal Guide.” thespruce.com.
3. Good Housekeeping. “Blood Stain Guide.” goodhousekeeping.com.
4. OxiClean. “Stain Solutions Guide.” oxiclean.com.