How to Get Blood Stains Out of Jeans: What Works and What Doesn’t

You were working in the garage and scraped your knuckle on a tool. You didn’t notice the blood until you saw a dark red spot on your favorite jeans. You grabbed a wet paper towel and started blotting, but the stain spread. You’ve heard that hot water sets blood stains, and that’s true. The wrong treatment can make the stain permanent. But with cold water and the right products, blood comes out of denim easily, even if it’s already dried.

Blood stains on jeans are marks caused by the protein in blood that bonds with fabric fibers. Blood is a protein stain, which means it responds to cold water and enzyme-based treatments. Hot water cooks the protein and sets the stain permanently, so the first rule is always cold water.

To get blood stains out of jeans, rinse with cold water immediately, apply liquid detergent or dish soap, let it sit for 10 minutes, then wash in cold water with an enzyme detergent. For dried blood, use hydrogen peroxide or a baking soda paste. Never use hot water on a blood stain.

Fresh Blood Stains on Jeans

Step 1: Rinse with cold water. Hold the stained area under cold running water from the back of the jeans. Push the blood back through the denim fibers it entered from. Cold water dissolves the blood protein and flushes it out. This is the most important step.

Step 2: Apply liquid detergent. Apply liquid laundry detergent or dish soap (like Dawn Ultra) directly to the stain. Work it in gently with your fingers. The enzymes in the detergent break down the blood protein.

Step 3: Let it sit for 10 minutes. The enzymes need time to break down the protein. Don’t let it dry.

Step 4: Rinse with cold water. Check if the stain is gone. If it is, wash the jeans in cold water with an enzyme detergent like Tide Free and Gentle. If the stain remains, move to the next treatment.

Step 5: Check before drying. Don’t put the jeans in the dryer until the stain is completely gone. Dryer heat sets blood permanently.

Dried Blood Stains on Jeans

If the blood has dried, the protein has bonded more tightly with the denim. Try these stronger treatments:

Hydrogen peroxide. Pour 3% hydrogen peroxide directly on the stain. It bubbles as it breaks down the blood protein. Let it sit for 5 minutes, then rinse with cold water. Hydrogen peroxide has a mild bleaching effect, but denim is sturdy enough to handle it. Test on an inconspicuous area first if the jeans are dark.

Baking soda paste. Mix Arm and Hammer Baking Soda with cold water to form a paste. Apply to the stain and let it sit for 30 minutes. Baking soda is mildly alkaline, which helps break down protein. Scrub gently with an old toothbrush, then rinse with cold water.

Salt paste. Mix table salt with cold water to form a paste. Apply to the stain and let it sit for 10 minutes. The salt draws out the blood protein through osmosis. Rinse with cold water.

OxiClean Max Force Spray. OxiClean Max Force Spray contains enzymes that break down protein stains. Spray the stain until saturated, let it sit for 10 minutes, then wash in cold water with enzyme detergent.

Meat tenderizer. Unseasoned meat tenderizer contains enzymes (papain) that break down protein. Make a paste with meat tenderizer and cold water, apply to the stain, let it sit for 15 minutes, then rinse with cold water.

Blood on Different Types of Jeans

Jean Type	Best Treatment	What to Avoid
Light wash denim	Cold water, hydrogen peroxide	Hot water
Dark wash denim	Cold water, baking soda paste	Hydrogen peroxide (may fade)
Black denim	Cold water, salt paste	Hydrogen peroxide, hot water
White denim	Cold water, hydrogen peroxide, OxiClean	Hot water
Colored denim	Cold water, baking soda paste	Hydrogen peroxide (test first)
Raw denim	Cold water, salt paste	Hydrogen peroxide, OxiClean

What Not to Do

Don’t use hot water. Hot water cooks the protein in blood and sets the stain permanently. Always use cold water for blood stains.

Don’t rub. Rubbing spreads the blood and pushes the protein deeper into the denim. Always blot.

Don’t put the jeans in the dryer. Dryer heat sets blood permanently. Always air dry and check first.

Don’t use chlorine bleach on colored jeans. Chlorine bleach will remove the blood but also strip the dye from colored denim. Use hydrogen peroxide or OxiClean instead.

Don’t wait. The longer blood sits, the harder it is to remove. Treat within minutes for the best results.

Timing Guide

Time Since Stain	Treatment	Success Rate
First 5 minutes	Cold water rinse + detergent	Very high
First hour	Cold water + detergent + baking soda	High
Same day	Hydrogen peroxide or OxiClean	Medium to high
Next day	Hydrogen peroxide + baking soda paste	Medium
Several days	OxiClean + repeated treatments	Low to medium

FAQ

How do you get blood stains out of jeans? Rinse with cold water immediately, apply liquid detergent or dish soap, let it sit for 10 minutes, then wash in cold water with an enzyme detergent. For dried blood, use hydrogen peroxide or a baking soda paste. Never use hot water.

Does cold water remove blood from jeans? Yes. Cold water dissolves the blood protein and flushes it out. It’s the most important step. Rinse from the back of the fabric to push the blood back through the fibers it entered from.

Does hot water set blood stains on jeans? Yes. Hot water cooks the protein in blood and bonds it permanently to the fabric. Always use cold water for blood stains, from the first rinse through the wash cycle.

Can you get dried blood out of jeans? Yes, but it’s harder. Apply hydrogen peroxide to the stain, let it bubble for 5 minutes, then rinse with cold water. For stubborn stains, use a baking soda paste or OxiClean Max Force Spray. Wash in cold water with enzyme detergent.

Does hydrogen peroxide remove blood from jeans? Yes. Hydrogen peroxide breaks down blood protein. Pour it directly on the stain, let it bubble for 5 minutes, then rinse with cold water. Test on an inconspicuous area first if the jeans are dark, as it can have a mild bleaching effect.

Can you use bleach on blood stains on jeans? Chlorine bleach removes blood but also strips the dye from colored denim. Use it only on white jeans. For colored jeans, use hydrogen peroxide or OxiClean Max Force Spray instead.

How do you remove blood from dark jeans without fading them? Use cold water and a baking soda paste. Mix baking soda with cold water, apply to the stain, let it sit for 30 minutes, scrub gently with a toothbrush, then rinse with cold water. Avoid hydrogen peroxide on dark denim, as it can fade the dye.

References

1. Tide. “How to Remove Blood Stains from Clothes.” tide.com.
2. The Spruce. “How to Remove Blood Stains.” thespruce.com.
3. Good Housekeeping. “How to Get Blood Out of Clothes.” goodhousekeeping.com.
4. OxiClean. “How to Remove Protein Stains.” oxiclean.com.