How to Get Blood Out of Cotton
A protein stain that heat sets permanently — always start with cold water.
Fresh Blood stain on Cotton
Before you startAlways test any treatment in an inconspicuous area first, and check the garment's care label before you begin.
- Rinse immediately under cold running water — never hot.
- Blot, don't rub.
- Rub liquid detergent into the stain and rinse with cold water.
- Launder in cold or warm water per the care label.
- Air-dry and check before drying.
Don’t do this
- Hot water sets blood permanently.
Sources: Tide; King University stain removal guide (PDF); The Spruce
Dried / set Blood stain on Cotton
Before you startAlways test any treatment in an inconspicuous area first, and check the garment's care label before you begin.
- Dried: use the enzyme soak method (blood-dried) — never hot water.
- Rinse immediately under cold running water — never hot.
- Blot, don't rub.
- Rub liquid detergent into the stain and rinse with cold water.
- Launder in cold or warm water per the care label.
- Air-dry and check before drying.
Don’t do this
- Hot water sets blood permanently.
Sources: Tide; King University stain removal guide (PDF); The Spruce
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Frequently asked questions
Is a fresh Blood stain easier to remove than a dried one?
Almost always. Treat Blood as soon as possible — dried stains need rehydrating and longer treatment times, and some stains set permanently with heat or age.
Should I test the treatment on Cotton first?
Yes. Always test any treatment in an inconspicuous area of the Cotton first, and check the care label before you begin.
Safety rules for every treatment
- Test every treatment in an inconspicuous area first — some treatments can fade dyes or damage finishes.
- Blot a wet stain; never rub it. Rubbing pushes the stain deeper into fibers.
- Check the garment's care label and follow it — skip any step the label prohibits.
- Never put the item in the dryer until the stain is completely gone; heat sets most stains.
- Never mix ammonia with chlorine bleach — the fumes are toxic and dangerous.
- Never use chlorine bleach on rust — it can intensify the stain.
- Rubbing alcohol is flammable and can fade some dyes; spot-test first and ventilate the area.
- Acetone dissolves acetate, triacetate, and modacrylic fabrics — check the fabric label first.
- Use cold water first on blood and other protein stains; hot water sets them.
- When in doubt — a valuable, vintage, or delicate item — take it to a professional cleaner instead.